Add New Description

Fill up the form and submit

2 i - 3 k

i + j + k

\sin^{- 1} \frac{1}{\sqrt{39}}

\cos^{- 1} \frac{1}{\sqrt{12}}

\cos^{- 1} \frac{- 1}{\sqrt{39}}

\sin^{- 1} \frac{1}{\sqrt{13}}

ANS : 3

Descrption

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

Cancel Login