Elementary Technical Mathematics
Elementary Technical Mathematics
12th Edition
ISBN: 9781337630580
Author: Dale Ewen
Publisher: Cengage Learning
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Trigonometric Identities
Trigonometry in mathematics deals with the right-angled triangle’s angles and sides. By trigonometric identities, we mean the identities we use whenever we need to express the various trigonometric functions in terms of an equation.
Inverse Trigonometric Functions
Inverse trigonometric functions are the inverse of normal trigonometric functions. Alternatively denoted as cyclometric or arcus functions, these inverse trigonometric functions exist to counter the basic trigonometric functions, such as sine (sin), cosi…
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Chapter 5.4, Problem 60E
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To calculate: The simplified value of the expression (−7ab)2 when a=2 and b=−3.

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Chapter 5 Solutions

Elementary Technical Mathematics

Ch. 5.1 - Prob. 1ECh. 5.1 - Evaluate each expression: (2)(3)2+3(2)6Ch. 5.1 - Prob. 3ECh. 5.1 - Prob. 4ECh. 5.1 - Prob. 5ECh. 5.1 - Prob. 6ECh. 5.1 - Prob. 7ECh. 5.1 - Evaluate each expression: (9)233(6)+[ 3(2)5(3) ]Ch. 5.1 - Evaluate each expression: [ (2)(8)2(2)3 ][ 4+(2)4...Ch. 5.1 - Prob. 10E
Ch. 5.1 - In Exercise 11-16, let x=2 and y=3, and evaluate...Ch. 5.1 - In Exercise 11-16, let x=2 and y=3, and evaluate...Ch. 5.1 - In Exercise 11-16, let x=2 and y=3, and evaluate...Ch. 5.1 - Prob. 14ECh. 5.1 - Prob. 15ECh. 5.1 - In Exercise 11-16, let x=2 and y=3, and evaluate...Ch. 5.1 - In Exercise 17-26, let x=1 and y=5, and evaluate...Ch. 5.1 - In Exercise 17-26, let x=1 and y=5, and evaluate...Ch. 5.1 - In Exercise 17-26, let x=1 and y=5, and evaluate...Ch. 5.1 - In Exercise 17-26, let x=1 and y=5, and evaluate...Ch. 5.1 - In Exercise 17-26, let x=1 and y=5, and evaluate...Ch. 5.1 - In Exercise 17-26, let x=1 and y=5, and evaluate...Ch. 5.1 - In Exercise 17-26, let x=1 and y=5, and evaluate...Ch. 5.1 - Prob. 24ECh. 5.1 - In Exercise 17-26, let x=1 and y=5, and evaluate...Ch. 5.1 - In Exercise 17-26, let x=1 and y=5, and evaluate...Ch. 5.1 - In Exercises 27-32, let x=3,y=4,andz=6 . Evaluate...Ch. 5.1 - In Exercises 27-32, let x=3,y=4,andz=6 . Evaluate...Ch. 5.1 - In Exercises 27-32, let x=3,y=4,andz=6 . Evaluate...Ch. 5.1 - Prob. 30ECh. 5.1 - Prob. 31ECh. 5.1 - Prob. 32ECh. 5.1 - In Exercises 33-42, let x=1,y=2,andz=3 . Evaluate...Ch. 5.1 - Prob. 34ECh. 5.1 - In Exercises 33-42, let x=1,y=2,andz=3 . Evaluate...Ch. 5.1 - Prob. 36ECh. 5.1 - In Exercises 33-42, let x=1,y=2,andz=3 . Evaluate...Ch. 5.1 - In Exercises 33-42, let x=1,y=2,andz=3 . Evaluate...Ch. 5.1 - Prob. 39ECh. 5.1 - In Exercises 33-42, let x=1,y=2,andz=3 . Evaluate...Ch. 5.1 - In Exercises 33-42, let x=1,y=2,andz=3 . Evaluate...Ch. 5.1 - In Exercises 33-42, let x=1,y=2,andz=3 . Evaluate...Ch. 5.2 - Remove the parentheses from each expression:...Ch. 5.2 - Prob. 2ECh. 5.2 - Prob. 3ECh. 5.2 - Prob. 4ECh. 5.2 - Prob. 5ECh. 5.2 - Remove the parentheses from each expression:...Ch. 5.2 - Prob. 7ECh. 5.2 - Prob. 8ECh. 5.2 - Prob. 9ECh. 5.2 - Prob. 10ECh. 5.2 - Prob. 11ECh. 5.2 - Remove the parentheses from each expression:...Ch. 5.2 - Prob. 13ECh. 5.2 - Prob. 14ECh. 5.2 - Prob. 15ECh. 5.2 - Prob. 16ECh. 5.2 - Remove the parentheses from each expression:...Ch. 5.2 - Remove the parentheses from each expression:...Ch. 5.2 - Remove the parentheses from each expression:...Ch. 5.2 - Prob. 20ECh. 5.2 - Prob. 21ECh. 5.2 - Prob. 22ECh. 5.2 - Prob. 23ECh. 5.2 - Prob. 24ECh. 5.2 - Prob. 25ECh. 5.2 - Prob. 26ECh. 5.2 - Prob. 27ECh. 5.2 - Prob. 28ECh. 5.2 - Combine the like terms: 6a2+a+12aCh. 5.2 - Combine the like terms: 5x2+3x28x2Ch. 5.2 - Prob. 31ECh. 5.2 - Prob. 32ECh. 5.2 - Prob. 33ECh. 5.2 - Prob. 34ECh. 5.2 - Prob. 35ECh. 5.2 - Prob. 36ECh. 5.2 - Prob. 37ECh. 5.2 - Combine the like terms: 3x25x2+4x2+x4+5x2x+2Ch. 5.2 - Prob. 39ECh. 5.2 - Prob. 40ECh. 5.2 - Prob. 41ECh. 5.2 - Prob. 42ECh. 5.2 - Prob. 43ECh. 5.2 - Prob. 44ECh. 5.2 - Prob. 45ECh. 5.2 - Prob. 46ECh. 5.2 - Simplify by first removing the parentheses and...Ch. 5.2 - Prob. 48ECh. 5.2 - Prob. 49ECh. 5.2 - Prob. 50ECh. 5.2 - Prob. 51ECh. 5.2 - Prob. 52ECh. 5.2 - Prob. 53ECh. 5.2 - Prob. 54ECh. 5.2 - Prob. 55ECh. 5.2 - Prob. 56ECh. 5.2 - Prob. 57ECh. 5.2 - Prob. 58ECh. 5.2 - Simplify by first removing the parentheses and...Ch. 5.2 - Prob. 60ECh. 5.2 - Prob. 61ECh. 5.2 - Prob. 62ECh. 5.2 - Simplify by first removing the parentheses and...Ch. 5.2 - Prob. 64ECh. 5.2 - Prob. 65ECh. 5.2 - Simplify by first removing the parentheses and...Ch. 5.2 - Prob. 67ECh. 5.2 - Prob. 68ECh. 5.2 - Prob. 69ECh. 5.2 - Prob. 70ECh. 5.2 - Prob. 71ECh. 5.2 - Prob. 72ECh. 5.2 - Simplify by first removing the parentheses and...Ch. 5.2 - Prob. 74ECh. 5.2 - Prob. 75ECh. 5.2 - Prob. 76ECh. 5.2 - Simplify by first removing the parentheses and...Ch. 5.2 - Prob. 78ECh. 5.3 - Classify each expression as a monomial, a...Ch. 5.3 - Prob. 2ECh. 5.3 - Prob. 3ECh. 5.3 - Prob. 4ECh. 5.3 - Prob. 5ECh. 5.3 - Classify each expression as a monomial, a...Ch. 5.3 - Prob. 7ECh. 5.3 - Classify each expression as a monomial, a...Ch. 5.3 - Classify each expression as a monomial, a...Ch. 5.3 - Classify each expression as a monomial, a...Ch. 5.3 - Prob. 11ECh. 5.3 - Prob. 12ECh. 5.3 - Rearrange each polynomial in decreasing order and...Ch. 5.3 - Rearrange each polynomial in decreasing order and...Ch. 5.3 - Prob. 15ECh. 5.3 - Prob. 16ECh. 5.3 - Rearrange each polynomial in decreasing order and...Ch. 5.3 - Rearrange each polynomial in decreasing order and...Ch. 5.3 - Rearrange each polynomial in decreasing order and...Ch. 5.3 - Prob. 20ECh. 5.3 - Prob. 21ECh. 5.3 - Prob. 22ECh. 5.3 - Add the following polynomials: (6x27x+5)+(3x2+2x5)Ch. 5.3 - Prob. 24ECh. 5.3 - Prob. 25ECh. 5.3 - Prob. 26ECh. 5.3 - Prob. 27ECh. 5.3 - Prob. 28ECh. 5.3 - Prob. 29ECh. 5.3 - Prob. 30ECh. 5.3 - Prob. 31ECh. 5.3 - Prob. 32ECh. 5.3 - Prob. 33ECh. 5.3 - Prob. 34ECh. 5.3 - Prob. 35ECh. 5.3 - Prob. 36ECh. 5.3 - Prob. 37ECh. 5.3 - Prob. 38ECh. 5.3 - Find each difference: (3x25x+4)(6x27x+2)Ch. 5.3 - Find each difference: (13x2x2)(15x+x2)Ch. 5.3 - Find each difference: (3a4b)(2a7b)Ch. 5.3 - Prob. 42ECh. 5.3 - Prob. 43ECh. 5.3 - Prob. 44ECh. 5.3 - Prob. 45ECh. 5.3 - Prob. 46ECh. 5.3 - Find each difference: (20w217w6)(13w2+7w)Ch. 5.3 - Find each difference: (y22y+1)(2y2+3y+5)Ch. 5.3 - Prob. 49ECh. 5.3 - Prob. 50ECh. 5.3 - Prob. 51ECh. 5.3 - Prob. 52ECh. 5.3 - Prob. 53ECh. 5.3 - Prob. 54ECh. 5.3 - Prob. 55ECh. 5.3 - Subtract the following polynomials:...Ch. 5.3 - Subtract the following polynomials:...Ch. 5.3 - Prob. 58ECh. 5.4 - Find each product: (3a)(5)Ch. 5.4 - Prob. 2ECh. 5.4 - Prob. 3ECh. 5.4 - Prob. 4ECh. 5.4 - Find each product: (9m2)(6m2)Ch. 5.4 - Prob. 6ECh. 5.4 - Find each product: (8a6)(4a2)Ch. 5.4 - Prob. 8ECh. 5.4 - Prob. 9ECh. 5.4 - Prob. 10ECh. 5.4 - Find each product: (6n)(5n2m)Ch. 5.4 - Find each product: (9ab2)(6a2b3)Ch. 5.4 - Prob. 13ECh. 5.4 - Prob. 14ECh. 5.4 - Prob. 15ECh. 5.4 - Prob. 16ECh. 5.4 - Find each product: (8a2bc)(3ab3c2)Ch. 5.4 - Find each product: (4xy2z3)(4x5z3)Ch. 5.4 - Find each product: (23x2y)(932xy4z3)Ch. 5.4 - Prob. 20ECh. 5.4 - Prob. 21ECh. 5.4 - Prob. 22ECh. 5.4 - Prob. 23ECh. 5.4 - Prob. 24ECh. 5.4 - Prob. 25ECh. 5.4 - Use the rules for exponents to simplify: (xy)4Ch. 5.4 - Prob. 27ECh. 5.4 - Prob. 28ECh. 5.4 - Use the rules for exponents to simplify: (3x4)2Ch. 5.4 - Use the rules for exponents to simplify: (5x2)3Ch. 5.4 - Prob. 31ECh. 5.4 - Prob. 32ECh. 5.4 - Use the rules for exponents to simplify: (x2x3)2Ch. 5.4 - Prob. 34ECh. 5.4 - Prob. 35ECh. 5.4 - Prob. 36ECh. 5.4 - Use the rules for exponents to simplify: (5x3y2)2Ch. 5.4 - Prob. 38ECh. 5.4 - Prob. 39ECh. 5.4 - Prob. 40ECh. 5.4 - Prob. 41ECh. 5.4 - Prob. 42ECh. 5.4 - Prob. 43ECh. 5.4 - Use the rules for exponents to simplify: (16x4x5)3Ch. 5.4 - Use the rules for exponents to simplify: (2x3y4z)3Ch. 5.4 - Prob. 46ECh. 5.4 - Prob. 47ECh. 5.4 - Prob. 48ECh. 5.4 - Prob. 49ECh. 5.4 - Prob. 50ECh. 5.4 - Prob. 51ECh. 5.4 - Prob. 52ECh. 5.4 - Prob. 53ECh. 5.4 - Prob. 54ECh. 5.4 - Prob. 55ECh. 5.4 - Prob. 56ECh. 5.4 - Prob. 57ECh. 5.4 - Prob. 58ECh. 5.4 - Prob. 59ECh. 5.4 - Prob. 60ECh. 5.4 - Prob. 61ECh. 5.4 - Prob. 62ECh. 5.4 - Prob. 63ECh. 5.4 - Prob. 64ECh. 5.4 - Prob. 65ECh. 5.4 - Prob. 66ECh. 5.4 - Prob. 67ECh. 5.4 - Evaluate each expression when a=2andb=3: b4Ch. 5.5 - Find each product. 4(a+6)Ch. 5.5 - Prob. 2ECh. 5.5 - Prob. 3ECh. 5.5 - Prob. 4ECh. 5.5 - Prob. 5ECh. 5.5 - Prob. 6ECh. 5.5 - Prob. 7ECh. 5.5 - Prob. 8ECh. 5.5 - Prob. 9ECh. 5.5 - Prob. 10ECh. 5.5 - Find each product. 3x(4x27x2)Ch. 5.5 - Prob. 12ECh. 5.5 - Prob. 13ECh. 5.5 - Prob. 14ECh. 5.5 - Prob. 15ECh. 5.5 - Prob. 16ECh. 5.5 - Find each product. 6x3(16x2+9x4)Ch. 5.5 - Find each product. 5x4(2x3+8x21)Ch. 5.5 - Prob. 19ECh. 5.5 - Prob. 20ECh. 5.5 - Prob. 21ECh. 5.5 - Prob. 22ECh. 5.5 - Prob. 23ECh. 5.5 - Prob. 24ECh. 5.5 - Prob. 25ECh. 5.5 - Prob. 26ECh. 5.5 - Prob. 27ECh. 5.5 - Prob. 28ECh. 5.5 - Prob. 29ECh. 5.5 - Prob. 30ECh. 5.5 - Prob. 31ECh. 5.5 - Prob. 32ECh. 5.5 - Prob. 33ECh. 5.5 - Prob. 34ECh. 5.5 - Prob. 35ECh. 5.5 - Prob. 36ECh. 5.5 - Find each product. (x+1)(x+6)Ch. 5.5 - Prob. 38ECh. 5.5 - Prob. 39ECh. 5.5 - Prob. 40ECh. 5.5 - Prob. 41ECh. 5.5 - Prob. 42ECh. 5.5 - Prob. 43ECh. 5.5 - Prob. 44ECh. 5.5 - Find each product. (6a+4)(2a3)Ch. 5.5 - Prob. 46ECh. 5.5 - Prob. 47ECh. 5.5 - Prob. 48ECh. 5.5 - Prob. 49ECh. 5.5 - Prob. 50ECh. 5.5 - Prob. 51ECh. 5.5 - Prob. 52ECh. 5.5 - Prob. 53ECh. 5.5 - Prob. 54ECh. 5.5 - Prob. 55ECh. 5.5 - Prob. 56ECh. 5.5 - Prob. 57ECh. 5.5 - Prob. 58ECh. 5.5 - Prob. 59ECh. 5.5 - Prob. 60ECh. 5.5 - Prob. 61ECh. 5.5 - Prob. 62ECh. 5.5 - Find each product. (g+h6)(gh+3)Ch. 5.5 - Find each product. (2x3y+4)(4x5y2)Ch. 5.5 - Find each product. (8xx3+2x41)(x2+2+5x3)Ch. 5.5 - Prob. 66ECh. 5.6 - Divide: 9x53x3Ch. 5.6 - Prob. 2ECh. 5.6 - Divide: 18x1212x4Ch. 5.6 - Prob. 4ECh. 5.6 - Prob. 5ECh. 5.6 - Prob. 6ECh. 5.6 - Divide: 8x212xCh. 5.6 - Prob. 8ECh. 5.6 - Prob. 9ECh. 5.6 - Prob. 10ECh. 5.6 - Prob. 11ECh. 5.6 - Prob. 12ECh. 5.6 - Prob. 13ECh. 5.6 - Prob. 14ECh. 5.6 - Prob. 15ECh. 5.6 - Prob. 16ECh. 5.6 - Divide: 0(113w2r3)Ch. 5.6 - Prob. 18ECh. 5.6 - Prob. 19ECh. 5.6 - Divide: (42x2y3)(14x2y4)Ch. 5.6 - Prob. 21ECh. 5.6 - Prob. 22ECh. 5.6 - Prob. 23ECh. 5.6 - Prob. 24ECh. 5.6 - Divide: 92x3y28xy3Ch. 5.6 - Prob. 26ECh. 5.6 - Prob. 27ECh. 5.6 - Prob. 28ECh. 5.6 - Prob. 29ECh. 5.6 - Prob. 30ECh. 5.6 - Prob. 31ECh. 5.6 - Prob. 32ECh. 5.6 - Prob. 33ECh. 5.6 - Prob. 34ECh. 5.6 - Prob. 35ECh. 5.6 - Prob. 36ECh. 5.6 - Divide: 24a416a28a8Ch. 5.6 - Prob. 38ECh. 5.6 - Prob. 39ECh. 5.6 - Prob. 40ECh. 5.6 - Divide: bx4bx3+bx24bxbxCh. 5.6 - Prob. 42ECh. 5.6 - Prob. 43ECh. 5.6 - Prob. 44ECh. 5.6 - Divide: 224x4y2z3168x3y2z4112xy4z228xy2z2Ch. 5.6 - Prob. 46ECh. 5.6 - Prob. 47ECh. 5.6 - Divide: 3a2b+4a2b26ab22ab2Ch. 5.6 - Prob. 49ECh. 5.6 - Divide: 18w4r4+27w3r336w2r29w3r3Ch. 5.7 - Find each quotient and check: (x2+3x+2)(x+1)Ch. 5.7 - Prob. 2ECh. 5.7 - Prob. 3ECh. 5.7 - Prob. 4ECh. 5.7 - Prob. 5ECh. 5.7 - Prob. 6ECh. 5.7 - Find each quotient and check: 2y2+3y52y1Ch. 5.7 - Prob. 8ECh. 5.7 - Prob. 9ECh. 5.7 - Prob. 10ECh. 5.7 - Prob. 11ECh. 5.7 - Find each quotient and check: (8x318x2+7x+3)(x1)Ch. 5.7 - Find each quotient and check:...Ch. 5.7 - Prob. 14ECh. 5.7 - Find each quotient and check: 2x314x12x+1Ch. 5.7 - Prob. 16ECh. 5.7 - Prob. 17ECh. 5.7 - Prob. 18ECh. 5.7 - Prob. 19ECh. 5.7 - Find each quotient and check: 2x3+3x29x+5x+3Ch. 5.7 - Prob. 21ECh. 5.7 - Prob. 22ECh. 5.7 - Prob. 23ECh. 5.7 - Prob. 24ECh. 5.7 - Find each quotient and check: 8x312x+1Ch. 5.7 - Prob. 26ECh. 5.7 - Prob. 27ECh. 5.7 - Prob. 28ECh. 5.7 - Prob. 29ECh. 5.7 - Find each quotient and check:...Ch. 5 - Prob. 1RCh. 5 - Prob. 2RCh. 5 - For any number a expect 0, a,a1a=?Ch. 5 - Evaluate: 104(3)Ch. 5 - Evaluate: 2+342Ch. 5 - Evaluate: (4)(12)623+1832Ch. 5 - In Exercises 7-12, let x=3andy=2 . Evaluate each...Ch. 5 - In Exercises 7-12, let x=3andy=2 . Evaluate each...Ch. 5 - In Exercises 7-12, let x=3andy=2 . Evaluate each...Ch. 5 - In Exercises 7-12, let x=3andy=2 . Evaluate each...Ch. 5 - In Exercises 7-12, let x=3andy=2 . Evaluate each...Ch. 5 - In Exercises 7-12, let x=3andy=2 . Evaluate each...Ch. 5 - In Exercises 13-16, simplify by removing the...Ch. 5 - In Exercises 13-16, simplify by removing the...Ch. 5 - In Exercises 13-16, simplify by removing the...Ch. 5 - In Exercises 13-16, simplify by removing the...Ch. 5 - Prob. 17RCh. 5 - Prob. 18RCh. 5 - Perform the indicated operation:...Ch. 5 - Perform the indicated operation:...Ch. 5 - Perform the indicated operation:...Ch. 5 - Perform the indicated operation: (6x2)(4x3)Ch. 5 - Perform the indicated operation: (7x2y)(8x3y2)Ch. 5 - Prob. 24RCh. 5 - Perform the indicated operation: 5a(3a+4b)Ch. 5 - Prob. 26RCh. 5 - Perform the indicated operation: (5x+3)(3x4)Ch. 5 - Prob. 28RCh. 5 - Perform the indicated operation: (49x2)(7x3)Ch. 5 - Prob. 30RCh. 5 - Perform the indicated operation: 36a327a2+9a9aCh. 5 - Perform the indicated operation: 6x2+x122x+3Ch. 5 - Perform the indicated operation: 3x3+2x26x+4x+2Ch. 5 - Evaluate: 35242Ch. 5 - Evaluate: 12232+331622Ch. 5 - Evaluate each expression when x=4andy=1. 4x23y3Ch. 5 - Evaluate each expression when x=4andy=1. 2x2y4x2yCh. 5 - Is 4+3x5x2 a monomial, a binomial, or a trinomial?...Ch. 5 - Rearrange the polynomial 3+4x25x3x in decreasing...Ch. 5 - Perform the indicated operation and simplify:...Ch. 5 - Perform the indicated operation and simplify:...Ch. 5 - Perform the indicated operation and simplify: Add:...Ch. 5 - Perform the indicated operation and simplify:...Ch. 5 - Perform the indicated operation and simplify:...Ch. 5 - Perform the indicated operation and simplify:...Ch. 5 - Perform the indicated operation and simplify:...Ch. 5 - Perform the indicated operation and simplify:...Ch. 5 - Perform the indicated operation and simplify:...Ch. 5 - Perform the indicated operation and simplify:...Ch. 5 - Perform the indicated operation and simplify:...Ch. 5 - Perform the indicated operation and simplify:...Ch. 5 - Perform the indicated operation and simplify:...Ch. 5 - Perform the indicated operation and simplify:...Ch. 5 - Perform the indicated operation and simplify:...Ch. 5 - Perform the indicated operation and simplify:...Ch. 5 - Perform the indicated operation and simplify:...Ch. 5 - Perform the indicated operation and simplify:...Ch. 5 - Perform the indicated operation and simplify:...Ch. 5 - Perform the indicated operation and simplify:...Ch. 5 - Perform the indicated operation and simplify:...
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