cos theta + sin theta / tan theta ×cot theta
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L.H.S. = sin θ tan θ/1 – cos θ = (sin θ. sin θ/cos θ) /1 - cos θ
= sin2 θ/cos θ(1 – cos θ)
= 1 – cos2θ/cos θ(1 – cos θ)
= (1 – cos θ)(1 + cos θ)/(cos θ(1 – cos θ)
= 1 + cos θ/cos θ = 1/cos θ + cos θ/cos θ
= sec θ + 1
= R.H.S.
Hope its help you.....
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