If the angle between two tangents drawn from an external point P to a circle of radius 'a' and centre O, is `60^(@),` then find the length of OP.

Explanation

To find the length of OP given that the angle between two tangents drawn from an external point P to a circle of radius 'a' and center O is 60 degrees, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Geometry**:
- Let O be the center of the circle and P be the external point from which the tangents PA and PB are drawn to the circle.
- The angle ∠APB between the two tangents is given as 60 degrees.

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