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find the exact value of the trigonometric function given that sinu=3/5 and cosv=-7/25 75. sin(u+v) 76.tan(u+v) verify the indentity 85. cos(x+pi/2)...

find the exact value of the trigonometric function given that sinu=3/5 and cosv=-7/25
75. sin(u+v)
76.tan(u+v)

verify the indentity
85. cos(x+pi/2)
88. sin(pi-x)=sinx

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