Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa

Find the value of sec^{-1}\left ( -2 \right )

Option: 1

2 \pi / 3


Option: 2

\pi / 3


Option: 3

5 \pi / 6


Option: 4

\pi / 6


Answers (1)

best_answer

As we have learned

Important Results of Inverse Trigonometric Functions -

\sec ^{-1}\left ( -x \right )= \pi -\sec ^{-1}x

-

 

 

Trigonometric Ratios of Special Angles -

- wherein

These are the values of trigonometric ratios for standard angles. 

 

 \sec ^{-1}(-2) \\ = \pi - \sec ^{-1}(2) \\ = \pi - \frac{\pi }{3 } \\= \frac{2 \pi }{3}

 

 

Posted by

Rakesh

View full answer

JEE Main high-scoring chapters and topics

Study 40% syllabus and score up to 100% marks in JEE

Similar Questions