Teaching BPSC बिहार माध्यमिक TGT (9 to 10) शिक्षक भर्ती 4.0 Mock Test Quantitative Aptitude Trigonometry Circular Measure of Angles
Evaluate:
cos2 20° + cos2 70° + sin 48° sec 42° + cos 40° cosec 50°
1
2
2
1
3
3
4
More than one of the above
5
None of the above