Maths-

General

Easy

Question

# If the angles of the Δ ABC are in A.P then 3R^{2}=1

- bc
- b
^{2}c - abc
- b
^{2}

^{2}c^{2}Hint:

### The angles of the triangle ABC are denoted by A, B, C and the corresponding opposite sides by a, b, c.

## The correct answer is: b^{2}

s denotes the semi-perimeter of the triangle ABC, ∆ its area and R the radius of the circle circumscribing the triangle ABC i.e., R is the circum-radius.

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