.sin x XE

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section: Chapter Questions
Problem 43RE
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Question

one of sin x, cos x, and tan x is given. Find the other
two if x lies in the specified interval. 

.sin x
XE
Transcribed Image Text:.sin x XE
Expert Solution
Step 1

Given sinx=-12, where xπ,3π2.

Since, x lies in third quadrant, so cosine function will be negative and tangent will have positive value.

We know that,

sinθ=ph

So, p=1 and h=2

Using Pythagoras theorem,

b=h2-p2=22-1=4-1=3

 

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