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August 5, 2015

Homework Help: Alg2/Trig

Posted by Vincent on Thursday, June 4, 2009 at 11:23pm.

Find the exact value of the trigonometric function given that sin u = 5/13 and cos v = -3/5. (Both u and v are in Quadrant II.)

Find csc(u-v).

First of all, I drew the triangles of u and v. Also, I know the formula of sin(u-v) is sin u * cos v - cos u * sin v. However, I am confused of what you do when you have csc(u-v). Would you do csc u * sec v - sec u * csc v?

Thanks.

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