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

CBSE Class 12 Math 2019 Delhi Set 2 Solved Paper

Question : 7 of 9

Marks: +1, -0

x=\cos {\t}+\log \tan (\;{ {\t}}/{2}) , {\y}= sin \; {\t}

, then find the values of

\;{ {\d}^2 {\y}}/{ {\dt}^2}

and

\;{ {\d}^2 {\y}}/{ {\d} x^2}

{\t}=\;{π}/{4}

Solution:

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