JEE MATHEMATICS MCQ: PROPERTIES OF TRIANGLES

1 Easy

1 of 1

Analyzing +4 | -1

If angles

A,\;B

and

C

are in AP, then

\frac{{a + b}}{c}

is equal to

View answer and explanation

Correct option: B

2\cos \frac{{A - C}}{2}

Option B (

2\cos \frac{{A - C}}{2}

) is correct because using the sine rule and the given condition that A, B, and C are in AP, the expression simplifies to

2\cos \frac{{A - C}}{2}

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