engineering recuitment DRDO CEPTAM STA B Tier I (Sr. Technical Assistant) Mock Test 2022 Quantitative Aptitude Trigonometry Circular Measure of Angles
Find the value of sin4 30° + cos4 30° - sin 25° cos 65° - sin 65° cos25°.
1
\(\frac{5}{8}\)
2
\(-\frac{3}{8}\)
3
\(\frac{13}{8}\)
4
0