. Verify the Pythagorean Identity.

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asked Jun 20, 2018 71.4k views

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Js Lim · Answer 1 · 2018-06-25T09:22:17+0000

convert to sines and cosines:-
1 + cot^2 x
= 1 + cos^2 x / sin^2x

= sin^2 x + cos^2 x
---------------------
sin^2 x

but sin^2 x + cos^2 x = 1

so this = 1 / sin^2x which is the same as csc^2 x

. Verify the Pythagorean Identity.

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