If x=\cos {\t}+\log \tan (\frac{ {\t}}{2}) , {\y}= \sin ...

CBSE Class 12 Math 2019 Delhi Set 2 Solved Paper

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Question : 7 of 9

Marks: +1, -0

If x=cos‌t+log‌tan(‌

t

2

),y=sin‌t, then find the values of ‌

d2y

dt2

and ‌

d2y

dx2

at t=‌

π

4

.

Solution:

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