Solve this: Q. $X=a{\mathrm{cos}}^{3}\theta \phantom{\rule{0ex}{0ex}}Y=a{\mathrm{sin}}^{3}\theta \phantom{\rule{0ex}{0ex}}Find\frac{{d}^{2}y}{d{x}^{2}}at\theta =\frac{\mathrm{\pi}}{6}$. Share with your friends Share 1 Abhirami answered this here you go.. 1 View Full Answer Ansar Husain Saudagar answered this 4/3x3^1/3 0 Akshat Agrawal answered this I hope it helps ! 0