CBSE BOARD X, asked by rajeshrobert03, 11 months ago

If sin theta/1-cos theta+sin theta/1+cos theta=4 find the value of theta

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Answered by Shalmali040203
4

Sin∅/1-cos∅ + sin∅/1+cos∅=4   ∴sin∅(1+cos∅)+sin∅(1-cos∅) / (1-cos∅)(1+cos∅)=4  ........taking LCM   ∴sin∅+sin∅Cos∅+sin∅-sin∅Cos∅ / 1-cos²∅=4      ∴2sin∅ / sin²∅=4   ∵ 1- cos²∅=sin²∅                                                                                                           ∴2 / sin∅=4   ∴ sin∅ =2 / 4  ∴sin∅=1 / 2   ∴∅ =30°    ∵ sin30=1 / 2

Answered by aatishgup
1

Hope this helps ...... ✌✌✌

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