state gov MP Patwari (Group 2 Sub Group 4) Mock Test 2025 Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities
Simplify.
cos (36° - A) cos (36° + A) + cos (54° - A) cos (54° + A)
1
cos A
2
sin 2A
3
cos 2A
4
sin A
Simplify.
cos (36° - A) cos (36° + A) + cos (54° - A) cos (54° + A)