Question

Find the derivative of the x = a (cos t + t sin t) ; y = a (sin t - t cos t)​

Answer 1

ANSWER

x=a(cost+tsint) and y=a(sint−tcost)

dtdx=a(−sint+tcost+sint)

⇒dtdx=atcost

y=a(sint−tcost)

dtdy=a(cost+tsint−cost)

dt