Mathematics · Trigonometry
यदि tan β = cos α sin α / (1 - cos 2 α + sin 2 α) है, तो cos 2β किसके बराबर है?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1(cos α - sin α) 2✓
- 2(cos α + sin α) 2
- 3(cos α - sin α) 3
- 4(cos α - sin α) 2 2
सही उत्तर देखें
(cos α - sin α) 2
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