CBSE BOARD X, asked by fb178, 11 months ago

Prove sin(90°-x) = cos x.

Answers

Answered by Anonymous
6

To prove sin(90°-x) = cos x.

By using identity of sin(A-B),

= sinA. cosB - sinB. cosA

= sin90°.cosx - sinx.cos90°

= 1.cosx - sinx.0

= cos x.

Answered by liza10987654321
1

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