First slide

Introduction to ITF

Question

If ‘ $x$ ’ is a negative real number then the value of $C o s^{- 1} x + S e c^{- 1} x$ is

Very Easy

A

rational number
B

Irrational number
C

Integer
D

Imaginary

Solution

$x = - 1$ only satisfies
$∴ C o s^{- 1} x + S e c^{- 1} x = π + π = 2 π$ , an irrational number

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