Q15 of 48 Page 84

Prove the following with the help of identities:

Taking the L.H.S we get,



Multiplying by (1 + cos θ) to both numerator and denominator,


⇒


⇒ (Using: (a + b)(a – b) = a2 – b2)


⇒ (Using the identity: sin2 θ + cos2 θ = 1)


⇒


= R.H.S


Hence, proved.


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