Please answer parts a, c, d, e, and f. The options for part e is yes or no.

Trigonometry (11th Edition)
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Chapter1: Trigonometric Functions
Section: Chapter Questions
Problem 1RE: 1. Give the measures of the complement and the supplement of an angle measuring 35°.
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Please answer parts a, c, d, e, and f. The options for part e is yes or no. 

We wish to prove the following trig identity:
cos(8)
sin(0)
= sin(0) + cos(0)
1- tan(0)
1- cot(0)
a. First, begin by rewriting each of the trig functions on the left hand side of the equality in terms of only sines and
sin(z)
-):
cosines (for example, rewrite tan(x) as
cos(x)
cos(8)
sin(0)
Preview
1- tan(0)
1- cot(6)
* Try again. Remember, rewrite the expression in terms of sines and cosines, but don't simplify yet!
b. Rewrite your expression from part (a) by multiplying the numerator and denominator of the first fraction by
cos(0) and simplify the result. Multiply the numerator and denominator of the second fraction by sin(0) and
simplify the result. However, do not simplify further yet. Your answer should be an expression which is the sum
of two fractions still. (still keep everything in terms of sines and cosines):
sin(8)
+
1- cot(0)
cos(0)
Preview
1- tan(0)
sin(0)
+
1- cot(0)
cos(0)
Correct! This expression is equivalent to
1- tan(0)
c. Rewrite you answer from part (b) as an expression of a single fraction. Begin by rewriting the fractions from
your answer in part (b) as equivalent fractions with a common denominator. (Hint: what is the relationship
between the factors (x – 2) and (2 – x)?).
cos(e)
sin(0)
Preview
1- tan(0)
1- cot(0)
* Try again. Your answer should now be an expression of a single fraction, still in terms of sines and cosines.
d. Factor the numerator and simplify the result (Hint: the numerator is similar to an expression of the form æ? – 22
).
Preview
Transcribed Image Text:We wish to prove the following trig identity: cos(8) sin(0) = sin(0) + cos(0) 1- tan(0) 1- cot(0) a. First, begin by rewriting each of the trig functions on the left hand side of the equality in terms of only sines and sin(z) -): cosines (for example, rewrite tan(x) as cos(x) cos(8) sin(0) Preview 1- tan(0) 1- cot(6) * Try again. Remember, rewrite the expression in terms of sines and cosines, but don't simplify yet! b. Rewrite your expression from part (a) by multiplying the numerator and denominator of the first fraction by cos(0) and simplify the result. Multiply the numerator and denominator of the second fraction by sin(0) and simplify the result. However, do not simplify further yet. Your answer should be an expression which is the sum of two fractions still. (still keep everything in terms of sines and cosines): sin(8) + 1- cot(0) cos(0) Preview 1- tan(0) sin(0) + 1- cot(0) cos(0) Correct! This expression is equivalent to 1- tan(0) c. Rewrite you answer from part (b) as an expression of a single fraction. Begin by rewriting the fractions from your answer in part (b) as equivalent fractions with a common denominator. (Hint: what is the relationship between the factors (x – 2) and (2 – x)?). cos(e) sin(0) Preview 1- tan(0) 1- cot(0) * Try again. Your answer should now be an expression of a single fraction, still in terms of sines and cosines. d. Factor the numerator and simplify the result (Hint: the numerator is similar to an expression of the form æ? – 22 ). Preview
e. Does your answer in part (c) match the expression on the right hand side of the equality above?
f. If you said "No" in part (d), use reciprocal identities, pythagorean identities, double angle formulas, half angle
formulas, etc. to simplify further. If you selected "Yes", type 0 as your answer.
Preview
Transcribed Image Text:e. Does your answer in part (c) match the expression on the right hand side of the equality above? f. If you said "No" in part (d), use reciprocal identities, pythagorean identities, double angle formulas, half angle formulas, etc. to simplify further. If you selected "Yes", type 0 as your answer. Preview
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