First slide

Properties of ITF

Question

The value of $\cos \{\tan^{- 1} (\tan 2)\},$ is

Moderate

A

$1 / \sqrt{5}$
B

$- 1 / \sqrt{5}$
C

$\cos 2$
D

$- \cos 2$

Solution

We have,
$\cos \{\tan^{- 1} (\tan 2)\}$
$= \cos \{\tan^{- 1} (\tan (2 - π))\} = \cos (2 - π) = \cos (π - 2) = - \cos$ 2

Get Instant Solutions

When in doubt download our app. Now available Google Play Store- Doubts App

Recieve an sms with download link

Doubts App

OR

SCAN ME

Doubts App

Doubts App