English, asked by karanprabhakarpd2m8h, 1 year ago

cot ^4 + cot^2= cosec^4- cosec ^ 2

Answers

Answered by shishir54

2

use trigonometric identity for
${ \cot(a) }^{2} + 1 = { cosec }^{2}$

karanprabhakarpd2m8h: kk

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