Q. 2 G3.8( 4 Votes )

# prove that :<

LHS

= 3 sin 30° sec 60° - 4 sin 150° cot 45°

= 3 sin 30° sec 60° - 4 sin (90° × 1 + 60°)cot 45°

We know that when n is odd, sin cos.

= 3 sin 30° sec 60° - 4 cos 60° cot 45°

= 3 (1/2) (2) – 4 (1/2) (1)

= 3 – 2

= 1

= RHS

Hence proved.

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