* Conditional Trigonometry
IF A + B + C = 180°
prove that :
Sin²A/2 + Sin²B/2 - Sin²C/2...
Mathematics, 29.03.2021 04:40 sherry59Sherry59
* Conditional Trigonometry
IF A + B + C = 180°
prove that :
Sin²A/2 + Sin²B/2 - Sin²C/2 =
1 - 2CosA/2.CosB/2.SinC/2
Answers: 2
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