defence exam Coast Guard Navik GD (General Duty) 02/2025 Mock Test Series Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities

8sin x. cos x. cos 2x. cos 4x का सरलीकृत व्यंजक क्या है?

1
sin3x
2
cos4x
3
sin8x
4
2sin2x
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