Q17 of 48 Page 84

Prove the following with the help of identities:

Taking L.H.S we get,



⇒


⇒


⇒ (Taking ‘–1’ common from denominator)


⇒


⇒ (Using: cot θ = )


⇒ (Using the identity: a3 –b3 = (a – b)(a2 + b2 + ab))


⇒


⇒ tan θ + cot θ +1


= R.H.S


Hence, proved.


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