Teaching BPSC बिहार माध्यमिक TGT (9 to 10) शिक्षक भर्ती 4.0 Mock Test Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities
If (2 cos3 A - cos A) = (sin A - 2 sin3 A), then what is the value of A?
1
90°
2
30°
3
45°
4
More than one of the above
5
None of the above