MATH 175: Chapter 7 Review Analytic Trigonometry - The Learning ...
MATH 175: Chapter 7 Review Analytic Trigonometry - The Learning ...
MATH 175: Chapter 7 Review Analytic Trigonometry - The Learning ...
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<strong>MATH</strong> <strong>175</strong> <strong>Chapter</strong> 7 <strong>Review</strong>: <strong>Analytic</strong> <strong>Trigonometry</strong><br />
Answer Key<br />
1) π/3<br />
2) π/6<br />
3) -π/4<br />
4) -0.85<br />
5) 1.86<br />
6) 6π/7<br />
7) - π/6<br />
8) - π/4<br />
9)<br />
10) x =<br />
x 3<br />
f 1 x cos 1 . Domain: 4 , 10 . Range: 0 ,<br />
7<br />
3<br />
2<br />
11)<br />
2<br />
1 u<br />
12) 2 cot<br />
13)<br />
2<br />
sin x cos x cos x 2 2 2 2 2<br />
sin x(tan x cos x cot x cos x) sin x sin x cos x (1 cos x) cos x 1 2cos x.<br />
cos x<br />
sin x<br />
14)<br />
15)<br />
cosu<br />
cos u<br />
1 1<br />
cosu sin u cosu sin u 1 1 tan u<br />
1<br />
cosu<br />
1<br />
cosu<br />
sinu<br />
cosu<br />
2 2<br />
1 sin u 1 sin u 1 sin u 1 sin u 1 sin u cos u cosu<br />
secu<br />
tan u<br />
.<br />
cosu cosu cosu cosu 1 sin u cos u(1 sin u) cos u(1 sin u) 1 sin u<br />
sin x sin x sin x[1 cos x 1 cos x] 2sin x 2sin x<br />
16)<br />
2 2<br />
1 cos x 1 cos x (1 cos x)(1 cos x) 1 cos x sin x<br />
17)<br />
2 6<br />
4<br />
18) 2 3<br />
19)<br />
3<br />
3<br />
2csc x.<br />
20) 1 2<br />
21) 152<br />
377<br />
22) 304<br />
425<br />
23)<br />
3 5 1<br />
8<br />
24) cos (x + (π/6)) = cos x cos (π/6) - sin x sin (π/6) =<br />
cos x sin x.<br />
3 1<br />
2 2<br />
REV 12/01/2010 5