state gov AP Police SI (Pre+Mains) Mock Test 2022 Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities
What is the value of cot (90 - x) sin4(90 - x) + cot (180 - x) sin4(180 - x)?
1
(cos 4x)/4
2
(sin22x)/2
3
(cos22x)/2
4
(sin 4x)/4