Teaching BPSC बिहार माध्यमिक TGT (9 to 10) शिक्षक भर्ती 4.0 Mock Test Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities
Find the value of (sin 78°/cos 12°) - (sin 63°/cos 27°) + 3(cos2 69° + cos2 21°)
1
4
2
3
3
5
4
More than one of the above
5
None of the above