CBSE Class 10 Math 2023 Delhi Set-1 Solved Paper

Question : 29 of 38

Marks: +1, -0

(A) Prove that

\;{ sin \;A-2 sin \;^3 A}/{2 \cos ^3 A-\cos A}=\tan A

OR
(B) Prove that

\ sec {\A}(1- sin \; {\A})(\ sec {\A}+\tan {\A})=1

Solution:

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