АCTIVITY A. Find the complement of cach of the following angles. 1. 15° 43 2. 27° 32' 46" B. Find the supplement of cach of the following angles. 1. 78° 2. 18° 52" 34"

Trigonometry (11th Edition)
11th Edition
ISBN:9780134217437
Author:Margaret L. Lial, John Hornsby, David I. Schneider, Callie Daniels
Publisher:Margaret L. Lial, John Hornsby, David I. Schneider, Callie Daniels
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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АCTIVITY
A. Find the complement of each of the following angles.
1. 15° 43'
2. 27° 32' 46"
B. Find the supplement of each of the following angles.
1. 78°
2. 18° 52' 34"
C. Classify cach angle as acute, obtuse, right or straight.
1. 125°
2. 89° 59' 59"
3. The complement of the angle whose measure is 35°
4. The supplement of any obtuse angle
5. The supplement of a straight angle
6. The complement of the supplement of 160°
D. Find the values of the six trigonometric functions of e for the right
with the given sides.
8
5
E. Given that 0 is an acute angle and cos 8= 7/25, find
c) sec e
a) tan 0
b) sin 0
F. Find the exact value of each expression.
a) csc 45" - sec 45
b) csc 60° sec 30° + cot 45°
d) csc (z/6) – sec (x/3)
G. Determine the value of B that will satisfy the following.
a) sin (4B + 10") = cos 6B
ь) sec (3B — 150)%3,
sin (58+90)
H. Solve each problem completely.
1. From the second-floor window directly across the street the angle of elevation of the top of an office
building in Makati is 57°20' and the angle of depression of the base is 18°16'. If the buildings are 38.3
meters apart, find the height of the office building.
2. The post office building in Manila is 21.8 meters away from the southern bank of the Pasig River. From a
window of the building 18.5 meters above the ground, a man finds that the angle of depression of the
northern bank is 8°12'. What is the width of the river at this point?
3. A plane flew 150 miles on a course of 220° and then 130 miles on a course 130". Then the plane retuned
to its starting point via the shortest route possible. Find that shortest distance.
I. Verify the following identities.
1. sin0+cotocose = csce
ese e
3. sin (csce -sin 0) =cos e
tane
4.
1-cose
= cot e
2.
1+ tan0
sece+1
cose
Transcribed Image Text:АCTIVITY A. Find the complement of each of the following angles. 1. 15° 43' 2. 27° 32' 46" B. Find the supplement of each of the following angles. 1. 78° 2. 18° 52' 34" C. Classify cach angle as acute, obtuse, right or straight. 1. 125° 2. 89° 59' 59" 3. The complement of the angle whose measure is 35° 4. The supplement of any obtuse angle 5. The supplement of a straight angle 6. The complement of the supplement of 160° D. Find the values of the six trigonometric functions of e for the right with the given sides. 8 5 E. Given that 0 is an acute angle and cos 8= 7/25, find c) sec e a) tan 0 b) sin 0 F. Find the exact value of each expression. a) csc 45" - sec 45 b) csc 60° sec 30° + cot 45° d) csc (z/6) – sec (x/3) G. Determine the value of B that will satisfy the following. a) sin (4B + 10") = cos 6B ь) sec (3B — 150)%3, sin (58+90) H. Solve each problem completely. 1. From the second-floor window directly across the street the angle of elevation of the top of an office building in Makati is 57°20' and the angle of depression of the base is 18°16'. If the buildings are 38.3 meters apart, find the height of the office building. 2. The post office building in Manila is 21.8 meters away from the southern bank of the Pasig River. From a window of the building 18.5 meters above the ground, a man finds that the angle of depression of the northern bank is 8°12'. What is the width of the river at this point? 3. A plane flew 150 miles on a course of 220° and then 130 miles on a course 130". Then the plane retuned to its starting point via the shortest route possible. Find that shortest distance. I. Verify the following identities. 1. sin0+cotocose = csce ese e 3. sin (csce -sin 0) =cos e tane 4. 1-cose = cot e 2. 1+ tan0 sece+1 cose
J. Determine the exact value by expressing the given angle in terms of the sum or difference of two special
angles.
(a) Cos 75°
(b) Csc165°
K. Use an addition formula to find the exact value of cos 15° cos 75° + sin 15° sin 75°
tan A=-V3, A in QII
L. Find sin (A + B), cos(A+B), and tan(A+B) if
cotß =-V2, Bin QIV
M. Write sin 7x + sin 3x as a product.
N. Evaluate without using calculator.
a. -2 sin 52.5° sin 97.5°
b. cos 255° - cos 195°
O. Sketch the graph of y = -2sin (3x – n)
P. Determine the exact value of csc ( cos-19- cos (tan-
Transcribed Image Text:J. Determine the exact value by expressing the given angle in terms of the sum or difference of two special angles. (a) Cos 75° (b) Csc165° K. Use an addition formula to find the exact value of cos 15° cos 75° + sin 15° sin 75° tan A=-V3, A in QII L. Find sin (A + B), cos(A+B), and tan(A+B) if cotß =-V2, Bin QIV M. Write sin 7x + sin 3x as a product. N. Evaluate without using calculator. a. -2 sin 52.5° sin 97.5° b. cos 255° - cos 195° O. Sketch the graph of y = -2sin (3x – n) P. Determine the exact value of csc ( cos-19- cos (tan-
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