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Hi there! Have questions about your homework? At Brainly, there are 60 million students who want to help each other learn. Questions are usually answered in less than 10 minutes. Try it for yourself by posting a question! :D

Q1.Two tangents PA and PB are drawn to a circle with centre O from an external point P. Prove that angleAPB = 2 angleOAB.

Q2. In a circle of radius 17 cm , two parallel chords are drawn on opposide sides of diameter.The distance between two chords is 23 cm and length of one chord is 16 cm , then the lenth of the other chord is.....

Q3.Prove that in two concentric circles the chord of the larger circle which touches the smaller circle is bisected at the point of contact.

Solution: Since one chord is 16 cm the distance between the chord and the centre is 15cm

Therefore the distance between the centre and other chord is8cm Using Pythagoras theorem we get half of the chord is 15cm therefore the length of the other chord 30cm.