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Find the Exact Value of the Indicated Trigonometric Function Of \theta

Question 307

Multiple Choice

Find the exact value of the indicated trigonometric function of θ\theta
- cos⁡θ=25,tan⁡θ<0\cos \theta = \frac { 2 } { 5 } , \quad \tan \theta < 0
Find sin⁡θ\sin \theta .


A) −32- \frac { 3 } { 2 }
B) −52- \frac { \sqrt { 5 } } { 2 }
C) −5- \sqrt { 5 }
D) −215- \frac { \sqrt { 21 } } { 5 }

Correct Answer:

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