Mathematics · Trigonometry
In ΔABC with usual notations, 2ac sin(12(A - B + C)) is equal to:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1a2 + b2 - c2
- 2c2 + a2 - b2✓
- 3b2 - c2 - a2
- 4c2 - a2 - b2
Correct answer
c2 + a2 - b2
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