Teaching BPSC बिहार मध्य विद्यालय (6 to 8) शिक्षक भर्ती 4.0 Mock Test Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities
If sin(x + y) = cos {3(x + y)}, then, the value of cot {2(x + y)} is _______.
1
2
2
1
3
-1
4
More than one of the above
5
None of the above