Please solve question no.31. Share with your friends Share 0 Yash Raj answered this Dear Student. Given, x=h+acosθ and y==k+asinθPutting these values in (x-h)2+(y-k)2, we get:(h+acosθ-h)2+(k+asinθ-k)2=(acosθ)2+(asinθ)2=a2cos2θ +a2sin2θ=a2(cos2θ +sin2θ)Since, cos2a +sin2a=1Hence we get a2×1=a2=R.H.S.Hence proved. We hope that this answer solves your query. Regards. 0 View Full Answer