defence exam Army Havildar SAC Mock Test Series 2025 Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities
व्यंजक cos 2A cos 2B + sin2(A - B) - sin2(A + B) का मान ज्ञात कीजिए।
1
sin (2A − 2B)
2
sin (2A + 2B)
3
cos (2A + 2B)
4
cos (2A − 2B)