7. Given cos x = - a) cos(x + y) 8 17 when T≤x≤ Зл 2 b) sin 2 y " and sin y= 5 13' when c) tan(x + y) 2 ≤ y ≤n, find each of the following. d) cos2x

Elementary Linear Algebra (MindTap Course List)
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Chapter1: Systems Of Linear Equations
Section1.3: Applications Of Systems Of Linear Equations
Problem 13E: Use sin0=0, sin2=1, and sin=0 to estimate sin3.
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7. Given cos x = -
a) cos(x + y)
8
17
>
when
T≤x≤
Зл
2
b) sin 2 y
and sin y =
5
13
when
≤ y ≤, find each of the following.
2
c) tan(x + y)
d) cos 2x
Transcribed Image Text:7. Given cos x = - a) cos(x + y) 8 17 > when T≤x≤ Зл 2 b) sin 2 y and sin y = 5 13 when ≤ y ≤, find each of the following. 2 c) tan(x + y) d) cos 2x
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