Mathematics · Trigonometry
यदि x = 30° है, तो 4 cos 3 x - 2 cos x का मान किसके बराबर है?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1sec x
- 2tan x
- 3sin 3x
- 4cos x✓
सही उत्तर देखें
cos x
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