Teaching BPSC बिहार माध्यमिक TGT (9 to 10) शिक्षक भर्ती 4.0 Mock Test Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities
\(\frac{1+\tan ^2 x}{1+\cot ^2 x}\) is equal to:
1
-1
2
tan2 x
3
sec2 x
4
More than one of the above
5
None of the above