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  • In Figure-3, from an external point P, two tangents PQ and PR are drawn to a circle of radius 4 cm with centre O. If <img alt="\angle QPR = 90^{\circ}" src="https://learn.careers360.com/latex-image/?%5Cdpi%7B100%7D%20%5Cangle%20QPR%20%3D%2090%5E%7B%5Cc

In Figure-3, from an external point P, two tangents PQ and PR are drawn to a circle of radius 4 cm with centre O. If \angle QPR = 90^{\circ}, then length of PQ is 
Option: 1 3 cm
Option: 2 4 cm
Option: 3 2cm
Option: 4 2\sqrt{2}cm

Answers (1)

Length of the tangent is equal to radius of the circle if tangents from external points are perpendicular.

Hence the length PQ = 4 cm

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Safeer PP

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