Table of Contents
Choose the correct options for the following questions.
$\cos^{-1}\frac{12}{13}$=
Difficulty: Easy
A:
$\tan^{-1}\frac{3}{5}$
B:
$\cot^{-1}\frac{13}{12}$
C:
$\sec^{-1}\frac{13}{12}$
D:
$\sin^{-1}\frac{5}{13}$
$\cos^{-1}(\cos x)$=
Difficulty: Easy
A:
x
B:
cos x
C:
x=1/x
D:
$\cos^{-2}x$
Unlock Premium Content
Sign in and upgrade to continue reading this premium post.