TANCET
Group Studies
Mock Tests
Notes
Library
Webinars
Join Now
Question Practice
Share
Target (sec):
00:00
Qn #765
Share
The value of $\cot^{-1}(21) + \cot^{-1}(13) + \cot^{-1}(-8)$ is:
A.
0
B.
$\pi$
C.
$\infty$
D.
$\dfrac{\pi}{2}$
Discussion
Join the Conversation
Log in to post comments and replies.
Log In
Open Discussion
❓ Question: The value of $\cot^{-1}(21) + \cot^{-1}(13) + \cot... | TANCET Group Studies | Tancet Group Studies