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Find the Exact Value Of cos(u+v)\cos ( u + v )

Question 13

Multiple Choice

Find the exact value of cos(u+v) \cos ( u + v ) given that sinu=817\sin u = \frac { 8 } { 17 } and cosv=6061\cos v = - \frac { 60 } { 61 } .(Both u and v are in Quadrant II. )


A) cos(u+v) =8121037\cos ( u + v ) = \frac { 812 } { 1037 }
B) cos(u+v) =3001037\cos ( u + v ) = - \frac { 300 } { 1037 }
C) cos(u+v) =8041037\cos ( u + v ) = - \frac { 804 } { 1037 }
D) cos(u+v) =3151037\cos ( u + v ) = \frac { 315 } { 1037 }
E) cos(u+v) =6451037\cos ( u + v ) = \frac { 645 } { 1037 }

Correct Answer:

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