Q. 3 A5.0( 1 Vote )

# Prove the followi

Answer :

Consider LHS,

LHS = + We know that sin (90° - θ) = cosθ and cos (90° - θ) = sinθ. + = + Taking LCM, + = We know that (a + b) (a – b) = a2 – b2. + = We know that 1 –sin2θ = cos2θ. + = = 2 ( )

We know that = secθ. + = 2secθ = RHS

Hence proved.

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