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# Trigonometric Equations

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Solve the problem

cos 5x / 2 + cos 3x/2

2 sin 2x sin x/2
2 sin 2x sin x
2 cos 2x
2 cos 2x cos x/2
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Use the given information to find the exact value of the expression:

Find cos(2, &#952; ) , csc &#952; = 5/3, &#952; lies in quadrant II

-7/25
24/25
7/25
-24/25
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Use the given information to find the exact value of the expression:

Find cos(2&#952;) , sin &#952; = 20/29, &#952; lies in quadrant I

540 / 841
-41 / 841
39 / 841
41 / 841

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Complete the identity

sin&#952; / cos&#952; + cos&#952; / sin&#952;

Sin q tan q
Sec q csc q
1 + cot q
-2tan ^2q

#### Solution Summary

Trigonometric equations and expressions are investigated.

\$2.19