Mathematics · Trigonometry
निम्नलिखित में से कौन सा cos(2θ) के बराबर है?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 11 - sin2θ
- 22 sin2θ - 1
- 32 cos2θ - 1✓
- 41 - 2 cos2θ
सही उत्तर देखें
2 cos2θ - 1
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