Mathematics · Trigonometry
In a triangle ABC with standard notations, if a × cos2(C/2) + c × cos2(A/2) = 3b2, then which of the following is true?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1a, b, and c are in Arithmetico-Geometric Progression
- 2a, b, and c are in A.P.✓
- 3a, b, and c are in H.P.
- 4a, b, and c are in G.P.
Correct answer
a, b, and c are in A.P.
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