Question

If angle between two tangents drawn from a point P to a circle of radius a and centre O is 60°, then OP = `asqrt(3)`

विकल्प

• True

• False

Answer 1

This statement is False.

Explanation:

From point P, two tangents are drawn.

Given, OT = a

Also, line OP bisects the ∠RPT.

∴ ∠TPO = ∠RPO = 30°

Also, OT ⊥ PT

⇒ ∠OTP = 90°

In right angled ΔOTP,

sin 30° = `"OT"/"OP"`

⇒ `1/2 = "a"/"OP"`

⇒ OP = 2a