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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, θ ) , csc θ = 5/3, θ 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(2θ) , sin θ = 20/29, θ lies in quadrant I

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

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Complete the identity

sinθ / cosθ + cosθ / sinθ

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

Solution Summary

Trigonometric equations and expressions are investigated.

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