Mathematics · Properties of Triangles
एक त्रिभुज ABC में, यदि (a - b)2 cos2(C2) + (a + b)2 sin2(C2) = a2 + b2 हो, तो cos A =
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1cos B
- 2sin C
- 3sin B✓
- 4cos C
सही उत्तर देखें
sin B
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