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2 years ago

Cot^3t/csct = cost(csc^2t-1)

1 answer:

4 0

We have to try to verify the identity -- $\dfrac{Cot^3t}{csct} = cost(csc^2t-1)$ 

$cost(csc^2t - 1)$

$cost(cot^2t)$

$cost( \dfrac{cos^2t}{sin^2t} )$

$\dfrac{cos^3t}{sin^2t}$

$sin^2t \neq csct$

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