If A + B + C = 2S then prove that 4cos(S-A/2)cos(S-B/2)cosC/2-1
If A + B + C = 2S then prove that 4cos(S-A/2)cos(S-B/2)cosC/2-1
lohit , 8 Years ago
Grade 10
Trigonometry> If A + B + C = 2S then prove that 4cos(S-...
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Nishant Vora
Last Activity: 8 Years ago
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