9 Given that cos 2A = - such that 25' 180° < 2A < 270°, without using a calculat find the values of (a) sin A, (b) cos A, (c) tan A,

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter6: The Trigonometric Functions
Section6.4: Values Of The Trigonometric Functions
Problem 38E
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pls help me do this the answer is a) 4/5 b)-3/5 c)-4/3
(b) sec (180° – 0),
(c) tan (90° –- 0).
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9 Given that cos 2A =-.
such that
25'
180° < 2A < 270°, without using a calculaton
find the values of
(a) sin A,
(b) cos A,
(c) tan A,
10 Prove each of the following trigonometric
Transcribed Image Text:(b) sec (180° – 0), (c) tan (90° –- 0). | 9 Given that cos 2A =-. such that 25' 180° < 2A < 270°, without using a calculaton find the values of (a) sin A, (b) cos A, (c) tan A, 10 Prove each of the following trigonometric
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