Q2 of 62 Page 10

Is the angle between two tangents to a circle can be 0°?

Yes, this may be possible only when both tangent lines coincide or are parallel to each other.


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37 In any triangle ABC, if the angle bisector of ∠A and perpendicular bisector of BC intersect, prove that they intersect on the circumcircle of the triangle ABC. 1

Is the length of tangent from an external point P on a circle with center 0 is always less than OP?

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If radii of two concentric circles are 4 cm and 5 cm. Find the length of each chord of one circle which is tangent to the other circle.

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In figure, if ∠AOB = 125°, find the ∠COD.