Teaching BPSC बिहार मध्य विद्यालय (6 to 8) शिक्षक भर्ती 4.0 Mock Test Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities
Find cos\(\left( { - \frac{{7\pi }}{2}} \right)\).
1
\({1 \over 2}\)
2
1
3
0
4
More than one of the above
5
None of the above