Teaching BPSC बिहार माध्यमिक TGT (9 to 10) शिक्षक भर्ती 4.0 Mock Test Quantitative Aptitude Trigonometry
If \(\rm \frac{\cosθ}{(1+\sinθ)}+\frac{\cosθ}{(1-\sinθ)}\)= 4 and θ is acute, then the value of θ is :
1
60°
2
15°
3
45°
4
More than one of the above
5
None of the above