Question

solve the above question

Answer 1

x = a(θ + sinθ) and y = a(1 - cosθ) 
=> dx/dθ = a(1 + cosθ) and dy/dθ = asinθ 
=> dy/dx 
= (dy/dθ) / (dx/dθ) 
= asinθ / a(1 + cosθ) 
= 2sin(θ/2)cos(θ/2) / 2cos^2 (θ/2) 
= tan(θ/2).
hope it helps you.....mark my answer as brailiest answer if you like......