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x=asin3θ.cosθ
dx/dθ = a(-sin3θ.sinθ +3cos3θ.cosθ)
y=asin3θ.sinθ
dy/dθ = a(sin3θ.cosθ + 3cos3θ.sinθ)
dy/dx
=(dy/dθ)/(dx/dθ)
=(sin3θ.cosθ + 3cos3θ.sinθ)/(-sin3θ.sinθ +3cos3θ.cosθ)
dy/dx |θ=π/3
=(sinπ.cos(π/3) + 3cosπ.sin(π/3))/(-sinπ.sin(π/3) +3cosπ.cos(π/3))]
= -3(√3/2) / (-3/2)
=√3
dx/dθ = a(-sin3θ.sinθ +3cos3θ.cosθ)
y=asin3θ.sinθ
dy/dθ = a(sin3θ.cosθ + 3cos3θ.sinθ)
dy/dx
=(dy/dθ)/(dx/dθ)
=(sin3θ.cosθ + 3cos3θ.sinθ)/(-sin3θ.sinθ +3cos3θ.cosθ)
dy/dx |θ=π/3
=(sinπ.cos(π/3) + 3cosπ.sin(π/3))/(-sinπ.sin(π/3) +3cosπ.cos(π/3))]
= -3(√3/2) / (-3/2)
=√3
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