Mathematics · Trigonometry
For a triangle ABC, the value of cos(2A) + cos(2B) + cos(2C) is minimum. If its inradius is 3 and incentre is M, then which of the following is NOT correct?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Area of ΔABC is 27√32✓
- 2MA · MB = -18
- 3sin(2A) + sin(2B) + sin(2C) = sin(A) + sin(B) + sin(C)
- 4Perimeter of ΔABC is 18√3
Correct answer
Area of ΔABC is 27√32
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