Find the exact value of cos 2x given that sinx= - 3 and x is in quadrant III.

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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3
Find the exact value of cos 2x given that sin x = - and x is in quadrant III.
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Transcribed Image Text:Tab 3 Find the exact value of cos 2x given that sin x = - and x is in quadrant III. 5 OA. 16 25 Capst k OB. O C. 7 25 O D. 16 25 Esc 7 25 80°F Mostly cloudy 1 F1 Tz N @ 2 F2 W S # 3 E X F4 $ 4 H R C TC LL a % 07 20 F 5 J P T F6 > W 6 G H F7 Y & 7 H B 8 J
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