Add New Description

Fill up the form and submit

সমাধান কর:

2 \tan^{- 1} (\cos x) = \tan^{- 1} (2 \cos e c x)

nπ \pm (- 1)^{n} \frac{π}{4}

2 nπ \pm \frac{π}{4}

nπ \pm \frac{π}{3}

nπ + \frac{π}{4}

ANS : 4

Descrption

To add a description please, login first. click here to login

Cancel Login