Two tangents making an angle of 120 degree with each other are drawn to a circle of radius 6 cm then the length of each tangent is equal to .......?

 

Let P be the external points and PA and PB be the two tangents drawn to the circle with centre O.

Given : ∠APB = 120°

Also radius = OA = OB = 6 cm

 

We know that tangents drawn from an external point are equally inclined to the line joining that point to the centre

 

Now In ∆OAP

∠OAP = 90°           (∵ Tangent is perpendicular to the radius at the point of contact)

 

Now in right ∆OAP

∠OPA = 60°

 

Also tangents drawn from an external point are equal in length

 

Hence the length of each tangent is cm.

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is angle is inside or outside?

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outside

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