Mathematics · Properties of Triangles
ΔABC में, cos A + cos B + cos C =
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 11 + r2R
- 21 - rR
- 31 + Rr
- 41 + rR✓
सही उत्तर देखें
1 + rR
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