If in a triangle ABC a ^ 2 ( C 2 )+ ^ 2 ( A 2 )= 3 b 2 , then the sides a, b and c
Mathematics · JEE Main · NTA Exams — Trigonometry
If in a triangle ABC
\(a \cos ^{2}\left(\frac{C}{2}\right)+\cos ^{2}\left(\frac{A}{2}\right)=\frac{3 b}{2},\)
then the sides a, b and c
\(a \cos ^{2}\left(\frac{C}{2}\right)+\cos ^{2}\left(\frac{A}{2}\right)=\frac{3 b}{2},\)
then the sides a, b and c
- are in AP
- are in GP
- are in HP
- satisfy a + b = c
Answer
(A) are in AP
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