Teaching BPSC बिहार माध्यमिक TGT (9 to 10) शिक्षक भर्ती 4.0 Mock Test Quantitative Aptitude Trigonometry
Simplify:
\(\left(1+\tan ^2 A\right)+\left(1+\frac{1}{\tan ^2 A}\right)\)
1
\(\frac{1}{\cot ^2 A-\tan ^4 A}\)
2
\(\frac{1}{\sin ^2 A-\sin ^4 A}\)
3
\(\frac{1}{\sin ^2 A-\cos ^4 A}\)
4
More than one of the above
5
None of the above