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Exercises 2 Find the values of the six circular functions of the following: 1. The P(- is the terminal point of an arc length s of the unit circle. 2. The P(-.-)is the terminal point of an arc length s of the unit circle.

Exercises 2 Find the values of the six circular functions of the following: 1. The P(- is the terminal point of an arc length s of the unit circle. 2. The P(-.-)is the terminal point of an arc length s of the unit circle.

Algebra & Trigonometry with Analytic Geometry
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.1: Verifying Trigonometric Identities
Problem 57E
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Exercisos 2 Find the values of the six circular functions of the following: 1. The P(- is the terminal point of an arc length s of the unit circle. 2. The P(--is the terminal point of an arc length s of the unit circle. Example 3. Suppose s is a real number sucn inat sin s = and cos s>0. Find cos s. Solution: With sin s= -and sin s = we choose y = - 3 and r= 4 (since a radius cannot be negative). In this case, we can solve for x, Since cos s> 0, then we use x = +7. rax + y Therefore, cos s = 4x + (-3) 16 = x' +9 x= 16 -9
Transcribed Image Text:Exercisos 2 Find the values of the six circular functions of the following: 1. The P(- is the terminal point of an arc length s of the unit circle. 2. The P(--is the terminal point of an arc length s of the unit circle. Example 3. Suppose s is a real number sucn inat sin s = and cos s>0. Find cos s. Solution: With sin s= -and sin s = we choose y = - 3 and r= 4 (since a radius cannot be negative). In this case, we can solve for x, Since cos s> 0, then we use x = +7. rax + y Therefore, cos s = 4x + (-3) 16 = x' +9 x= 16 -9
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