![]() NCERT Exemplar Class 10 Maths Chapter 9 Circles are part of NCERT Exemplar Class 10 Maths. If radii of two concentric circles are 4 cm and 5 cm, then the length of each chord of one circle which is tangent to the other circle is NCERT Exemplar Class 10 Maths Chapter 9 CirclesĬhoose the correct answer from the given four options: Here we have given NCERT Exemplar Class 10 Maths Chapter 9 Circles. (B) Let O be the centre of two concentric circles C 1 and C 2, whose radii are r 1 = 4 cm and r 2 = 5 cm. In figure, if ∠AOB = 125°, then ∠COD is equal to ∴ Length of chord AC = 2BC = 2 x 3 = 6 cm Now, we draw a chord AC of circle C 2, which touches the circle Q at B.Īlso, join OB, which is perpendicular to AC. (D) We know that the opposite sides of a quadrilateral circumscribing a circle subtend supplementary angles at the centre of the circle. If AT is the tangent to the circle at the point A, then ∠BAT is equal to In figure, AB is a chord of the circle and AOC is its diameter such that ∠ACB = 50°. (C) In figure, AOC is a diameter of the circle. We know that, diameter subtends an angle 90° at the circle. Since, AT is the tangent to the circle at point A. Then the area of the quadrilateral PQOR is Therefore, OA is perpendicular to AT.įrom a point P which is at a distance of 13 cm from the centre O of a circle of radius 5 cm, the pair of tangents PQ and PR to the circle are drawn. ![]() (A) Firstly, draw a circle of radius 5 cm with centre O. Now, area of ∆OQP = \(\frac \) x 12 x 5 = 30 cm 2 P is a point at a distance of 13 cm from O. #XMLMIND W2X NEXT PREVIOUS NAVIGATION PDF#.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |