Math, asked by vaishnavi8575, 1 year ago

please solve this problem step by step ​

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Answered by YSRG
1

the answer is as follows

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vaishnavi8575: but I can't understand what you did
YSRG: first I took square on both side then i took a^2 + b^2 on LHS and also a^2 to LHS then I took a^2 common then (sin^2theta -1 ) =. - cos^2theta
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