Question

1+cos theta +cos2theta/sintheta+sin2theta =cot theta p t

Answer 1

Answer:

Answer:

LHS=RHS

Explanation:

$LHS=\frac{1+cos\alpha+cos2\alpha  }{sin\alpha+sin2\alpha  }$

Use,

$cos2\alpha =2cos^{2}\alpha  -1\\sin2\alpha =2sin\alpha cos\alpha$

Replace, $\alpha$ to θ

See, the attachment for formula used and apply according to it.