# What identity is this? If it would be pythagorean identity the identity would change from csc squared to cot squared plus one

Pythagorean Identity

Which is a pythagorean identity as well

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You have described the following Pythagorean identity relating the cosecant and cotangent:

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The identity you mentioned is the Pythagorean identity for cotangent:

[ \cot^2(\theta) + 1 = \csc^2(\theta) ]

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