Teaching BPSC बिहार माध्यमिक TGT (9 to 10) शिक्षक भर्ती 4.0 Mock Test Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities
\(\frac{sin(90^\circ-x)cosec(90^\circ-x)}{1+tan^2(90^\circ-x)}\) ?
1
sin2x
2
cos2x
3
tan2x
4
More than one of the above
5
None of the above