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Question : 29 of 160
Marks:
+1,
-0
Solution:
Let us consider
x=a‌cos‌θ⇒‌‌=−a‌sin‌θ   (i)
y=b‌sin‌θ⇒‌‌=b‌cos‌θ    (ii)
Divide equation (ii) by (i).
‌‌=−‌‌‌cot‌θ Again differentiate
‌‌ with respect to x.
‌‌=−‌‌(−cosec2θ)‌‌ =‌‌| b‌cos‌e‌c2‌θ |
| −a2‌sin‌θ |
=−‌‌ =−‌‌
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