Mathematics · Trigonometry
निम्नलिखित में से कौन सा sin(α) - sin(β) के लिए सही त्रिकोणमितीय सर्वसमिका (identity) है?
- 12 cos( α+β 2 ) cos( α-β 2 )
- 22 cos( α-β 2 ) sin( α+β 2 )
- 32 sin( α+β 2 ) sin( α-β 2 )
- 42 cos( α+β 2 ) sin( α-β 2 )✓
सही उत्तर देखें
2 cos( α+β 2 ) sin( α-β 2 )
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