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CGP EDU Academic Team
Published on: August 14, 2026
Equation of tangent to curve x = a cos 3 t, y = a sin 3 t at 't' is -
Text Solution
Verified by ExpertsThe correct answer is:
B
= – 3 a cos2t sin t 
= 3a sin2t cost
= – tan t ⇒ y – a sin 3 t = – tan t (x– acos 3 t)
⇒ y cost + x sin t – a sin 3 t cos t–a sin t –cos 3 t= 0
⇒ x tan t + y cos t – a t sin t cos t = 0
⇒ x sec t + y cosec t = a
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