Teaching BPSC बिहार माध्यमिक TGT (9 to 10) शिक्षक भर्ती 4.0 Mock Test Quantitative Aptitude Trigonometry
\(\frac{\cos \theta}{\sec \theta-1}+\frac{\cos \theta}{\sec \theta+1}\) is equal to :
1
2sec2θ
2
2cot2θ
3
2cos2θ
4
More than one of the above
5
None of the above