COS 81 - Sin 9 = ???
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answer will be zero as both are complementary angles
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coolboy7526:
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Hi
Cos81 - Sin 9 = ????
Cos(90-9) - Sin 9
we know that Cos (90- theta) = sin theta
there fore, Cos(90 - 9) = Sin9
Sin9 - Sin9
= 0
Cos 81 - Sin9 = 0
Cos81 - Sin 9 = ????
Cos(90-9) - Sin 9
we know that Cos (90- theta) = sin theta
there fore, Cos(90 - 9) = Sin9
Sin9 - Sin9
= 0
Cos 81 - Sin9 = 0
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