Q4 of 104 Page 204

Prove the following by using trigonometric identities:

L.H.S





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2

Prove the following by using trigonometric identities:

2sin2θ + 4sec2θ + 5cot2θ + 2cos2θ — 4tan2θ — 5cosec2θ = 1

 3

Prove the following by using trigonometric identities:

 5

Prove the following by using trigonometric identities:

 6

Prove the following by using trigonometric identities: