Mathematics · Properties of Triangles
In a triangle ABC, the expression 2(r1 + r3)ac(1 + cos B) is equal to:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Δb
- 2bΔ✓
- 32Δa + b + c
- 4a + b + c2Δ
Correct answer
bΔ
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