Question

explain me trigonometric fundamental identities
$sin {}^{2} + cos {}^{2} = 1$
$1 + tan {}^{2} = sec {}^{2}$
$1 + cot {}^{2} = cosec {}^{2}$
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Answer 1

A detailed solution is given in the poctures attached with this answer. The pictures will help you in understanding the fact that how these fundamental trigonometric identities came.

Answer 2

Step-by-step explanation:

sin theta = opposite side upon hypotenuse .

cos theta = Adjacent side upon hypotenuse .

Tan theta = sin theta upon cos theta .

cot theta = cos theta upon sin theta .

sec theta = hypotenuse upon opposite side .

cosec theta = hypotenuse upon Adjacent side.

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