Question

Proof of
cos(90-x)=sinx

Answer 1

cos(90+x)=-sinx, where 90 and x are both measured in degrees. This transformation process makes use of two trigonometric identities, cos(180-x)=-cosx. cos(90-x)=sinx.

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Answer 2

Answer:

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Step-by-step explanation:

Proof of

cos(90-x)=sinx

equal to..

since the cousins are confusions of each other.. the core zone of 90 minus x should be the same as the sign of x. this impulse that graph of Sins functionis the same as shifting the graph of the cousins function 90 degree to right.