11-23-2020, 03:52 PM

Online video classes by CBSE class 10 Maths expert Radhika Polina. In these classes teacher will help you to understand the important theories of the Chapter Circles and to solve all the problems in Chapter 10 Circles in CBSE class 10 text book

PART 1- Introduction to Circles

Teacher introduces the chapter circles and explains the important concepts in the chapter

like Circle, Radius, Chord, Diameter, Segment, Arc etc.

Teacher also explains the following problems Exercises 10.1

1. How many tangents can a circle have?

2. Fill in the blanks:

3. A tangent PQÂ at a pointÂ PÂ of a circle of radiusÂ 5 cm5 cmÂ meets a line through the centerÂ OOÂ at a point QÂ so thatÂ Q=12 cm.Q=12 cm.Â Length PQÂ is:

4. Draw a circle and two lines parallel to a given line such that one is a tangent and the other, a secant to the circle.

Watch the class in YouTube for the solutions

PART 1- Introduction to Circles

Teacher introduces the chapter circles and explains the important concepts in the chapter

like Circle, Radius, Chord, Diameter, Segment, Arc etc.

Teacher also explains the following problems Exercises 10.1

1. How many tangents can a circle have?

2. Fill in the blanks:

(i) A tangent to a circle intersects it in _________ point (s).

(ii) A line intersecting a circle in two points is called a ____________.

(iii) A circle can have _________ parallel tangents at the most.

(iv) The common point of a tangent to a circle and the circle is called _________ .3. A tangent PQÂ at a pointÂ PÂ of a circle of radiusÂ 5 cm5 cmÂ meets a line through the centerÂ OOÂ at a point QÂ so thatÂ Q=12 cm.Q=12 cm.Â Length PQÂ is:

(A)Â 12 cmÂ Â

(B)Â 13 cmÂ Â Â Â

©Â 8.5 cmÂ Â Â

(D)Â âˆš119cm.4. Draw a circle and two lines parallel to a given line such that one is a tangent and the other, a secant to the circle.

Watch the class in YouTube for the solutions