JEE MATHEMATICS MCQ: PROPERTIES OF TRIANGLES

1 Easy

1 of 1

Application +4 | -1

If in a

\Delta \;ABC,\;a{\cos ^2}\left( {\frac{C}{2}} \right) + c{\cos ^2}\left( {\frac{A}{2}} \right) = \frac{{3b}}{2}

, then the sides

a,\;b

and

c

View answer and explanation

Correct option: A

Are in AP

Option A (Are in AP) is correct because the given condition simplifies to

2b = a + c

, which is the condition for a, b, and c to be in arithmetic progression.

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