Question

# In

- 2ccot
- 2ccot
- 2ccot
- 2ctan

Hint:

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

## The correct answer is: 2ccot

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### In

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.