Teaching BPSC बिहार मध्य विद्यालय (6 to 8) शिक्षक भर्ती 4.0 Mock Test Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities
If a triangle ABC is right-angled at A, then what is the value of \(\rm \sin\frac{B+C}{2}\cos\frac{B+C}{2}\)?
1
\(\frac{\sqrt3}{4}\)
2
\(\frac{1}{2}\)
3
\(\frac{1}{4}\)
4
More than one of the above
5
None of the above