TS EAMCET · Maths · Properties of Triangles
In a \(\triangle A B C\), if \(a \cos ^2 \frac{C}{2}+c \cos ^2 \frac{A}{2}=\frac{3 b}{2}\), then the sides of the triangle are in
- A an arithmetic progression
- B a geometric progression
- C a harmonic progression
- D an arithmetico-geometric progression
Answer & Solution
Correct Answer
(A) an arithmetic progression
Step-by-step Solution
Detailed explanation
In \(\triangle A B C, a \cos ^2 \frac{c}{2}+a \cos ^2 \frac{A}{2}=\frac{3 b}{2}\)…
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