Express all the trigonometric ratios in terms of Cos A.

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All trigonometric ratios can be converted in each form. You will get all those answers here.
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Your explanation is crystal clear 👍👍...
Thanks...🙂🙂🙂🙂

akarshkumar
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I think it is wrong because when I see it in arihant it was COSA=root 1-sin square A
AND COSA =COS A
COS A =1/root 1+TAN SQUARE A

Muskankapoor_