3. Find cos a if sin a

Calculus: Early Transcendentals
8th Edition
ISBN:9781285741550
Author:James Stewart
Publisher:James Stewart
Chapter1: Functions And Models
Section: Chapter Questions
Problem 1RCC: (a) What is a function? What are its domain and range? (b) What is the graph of a function? (c) How...
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Solve #3, show all work
1. Find all real numbers satisfying the following equations. ( Not Accepted: calculator answer/just a decimal with
по work or eaplanation).
1
+1) :
(e) cos () =
(a) sin
= 0
(b) tan (2x) = 1
2. Find the exact value of sin 20 and cos 20 if sin 0 =
H and angle 0 lies in quadrant II.
3. Find cos x if sin x =
4. Solve triangle AABC if ZA = 43, with sides a = 81, and b = 62. Round lengths of sides to the nearest tenth
and angle measures to the nearest degree. Use the Law of Sines.
5. Find exact values (no decimal) the trig functions using Half-Angle or Double-Angle Identities.
(a) sin
12
(b) sin (165°)
(c) sin (112.5°)
6. Find cos
if 0 =
COS E
1+ sin æ
7. Verify the identity:
2 sec x.
1+ sin x
COS X
Transcribed Image Text:1. Find all real numbers satisfying the following equations. ( Not Accepted: calculator answer/just a decimal with по work or eaplanation). 1 +1) : (e) cos () = (a) sin = 0 (b) tan (2x) = 1 2. Find the exact value of sin 20 and cos 20 if sin 0 = H and angle 0 lies in quadrant II. 3. Find cos x if sin x = 4. Solve triangle AABC if ZA = 43, with sides a = 81, and b = 62. Round lengths of sides to the nearest tenth and angle measures to the nearest degree. Use the Law of Sines. 5. Find exact values (no decimal) the trig functions using Half-Angle or Double-Angle Identities. (a) sin 12 (b) sin (165°) (c) sin (112.5°) 6. Find cos if 0 = COS E 1+ sin æ 7. Verify the identity: 2 sec x. 1+ sin x COS X
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