defence exam Agniveer Vayu Group X & XY Mock Test 01/2026 Mathematics Trigonometry Inverse Trigonometric Functions
यदि \(\frac{\pi}{2} \leq x \leq \frac{3 \pi}{4}\) है, तो cos-1\(\left(\frac{12}{13} \cos x+\frac{5}{13} \sin x\right)\) किसके बराबर है?
1
\(x-\tan ^{-1} \frac{4}{3}\)
2
\(x-\tan ^{-1} \frac{5}{12}\)
3
\( x+\tan ^{-1} \frac{4}{5}\)
4
\(x+\tan ^{-1} \frac{5}{12}\)