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

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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