NCERT Class 10 Chapter 15 Constructions CBSE Board Sample Problems Very Short Answer
Get unlimited access to the best preparation resource for CBSE : fully solved questions with step-by-step explanation- practice your way to success.
Question
In the figure, given below PA and PB are tangents to the circle drawn from an external point P. CD is the third tangent touching the circle at Q. If PB=10cm and CQ =2 cm, what is the length of PC?

Tangents to the Circle Drawn
Solution
Ans.
Question
In the given figure, if TP and TQ are the two tangents to a circle with centre O so that then find

Two Tangents to a Circle with Centre
Solution
Ans. Since
Question
In figure. PA and PB are tangents from P to the circle with centre O. R is a point on the circle prove that.

A Circle Are Equal in Length
Solution
Ans. Since length of tangents from an external point to a circle are equal in length
And
Now