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How do you evaluate ${tan}^{- 1} (\frac{4 π}{5})$ $Tan^-1((4pi)/5)$ ?

1 Answer

A. S. Adikesavan

Jul 18, 2018

).3795 radian = $68^o 18' 11"$ , nearly..

Explanation:

$tan^(-1)(4/5pi) = tan^(-1)(2.51274)= 63.303^o$

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