Q7 of 48 Page 84

Prove the following with the help of identities:

As we know,


Sec2 θ = 1 + tan2 θ and cosec2 θ = 1 + cot2 θ


Taking L.H.S we get,



⇒


⇒


⇒


Using the identity: (a + b)2 = a2 + b2 + 2.a.b


⇒


⇒ tan θ + cot θ


= R.H.S


Hence, proved


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