Q2 of 104 Page 196

Prove the following:

cos(90–θ ) = sinθ

tan(90–θ ) = cotθ


sin(90–θ ) = cosθ


cot(90–θ ) = tanθ


cosec(90–θ ) = secθ


sec(90–θ) = cosecθ


L.H.S.




= 0


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(1) sin85 + cosec85


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