First slide

Properties of ITF

Question

$C o s^{- 1} (\frac{a - b}{a + b}) =$

Easy

A

$2 T a n^{- 1} b$
B

$2 T a n^{- 1} \sqrt{\frac{b}{a}}$
C

$2 T a n^{- 1} \sqrt{\frac{a}{b}}$
D

$2 T a n^{- 1} (\frac{a b}{a - b})$

Solution

$C o s^{- 1} (\frac{(1 - \frac{b}{a})}{(1 + \frac{b}{a})}) = C o s^{- 1} (\frac{1 - {(\sqrt{\frac{b}{a}})}^{2}}{1 + {(\sqrt{\frac{b}{a}})}^{2}}) = 2 T a n^{- 1} \sqrt{\frac{b}{a}}$

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