Chapter 10 – Circles
3. In Fig. 9.4, AB is a chord of the circle and AOC is its diameter such that ∠ACB = 50°. If AT is the tangent to the circle at the point A, then ∠BAT is equal to
05
Jul
3. In Fig. 9.4, AB is a chord of the circle and AOC is its diameter such that ∠ACB = 50°. If AT is the tangent to the circle at the point A, then ∠BAT is equal to 3. In Fig. 9.4 AB is a chord of the circle and AOC is its diameter such [...]
2. In Fig. 9.3, if ∠AOB = 125°, then ∠COD is equal to
05
Jul
2. In Fig. 9.3, if ∠AOB = 125°, then ∠COD is equal to 2. In Fig. 9.3 if ∠AOB = 125° then ∠COD is equal to July 5, 2021 Category: Chapter 10 - Circles , Maths , NCERT Class 10 ,
1. 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
05
Jul
1. 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 1. If radii of two concentric circles are 4 cm and 5 cm then the length of each chord of one circle which is tangent [...]
PQ is a chord of length 8 cm, of a circle of radius 5 cm. The tangents at P and Q intersect at a point T. Find the length of TP.
06
Oct
PQ is a chord of length 8 cm, of a circle of radius 5 cm. The tangents at P and Q intersect at a point T. Find the length of TP. of a circle of radius 5 cm. The tangents at P and Q intersect at a point T. Find the length of TP. PQ [...]
Two tangent TP and TQ are drawn to a circle with centre O from an external point T. Prove that ∠PTQ=2 ∠OPQ.
06
Oct
Two tangent TP and TQ are drawn to a circle with centre O from an external point T. Prove that ∠PTQ=2 ∠OPQ. Two tangent TP and TQ are drawn to a circle with centre O from an external point T. Prove that ∠PTQ=2 ∠OPQ. October 6, 2020 Category: Chapter 10 - Circles , Maths , [...]
Prove that in two concentric circles the chord of larger circle which touches the smaller circle is bisected at point of contact.
06
Oct
Prove that in two concentric circles the chord of larger circle which touches the smaller circle is bisected at point of contact. Prove that in two concentric circles the chord of larger circle which touches the smaller circle is bisected at point of contact. October 6, 2020 Category: Chapter 10 - Circles , Maths , [...]
Prove that opposite sides of a quadrilateral circumscribing a circle subtend supplementary angles at the centre of the circle.
06
Oct
Prove that opposite sides of a quadrilateral circumscribing a circle subtend supplementary angles at the centre of the circle. Prove that opposite sides of a quadrilateral circumscribing a circle subtend supplementary angles at the centre of the circle. October 6, 2020 Category: Chapter 10 - Circles , Maths , NCERT Class 10 ,
A triangle ABC is drawn to circumscribe a circle of radius 4 cm such that the segments BD and DC into which BC is divided by the point of contact D are of lengths 8 cm and 6 cm respectively. Find the sides AB and AC.
06
Oct
A triangle ABC is drawn to circumscribe a circle of radius 4 cm such that the segments BD and DC into which BC is divided by the point of contact D are of lengths 8 cm and 6 cm respectively. Find the sides AB and AC. A quadrilateral ABCD is drawn to circumscribe a circle. [...]
Prove that the parallelogram circumscribing a circle is a rhombus.
06
Oct
Prove that the parallelogram circumscribing a circle is a rhombus. Prove that the parallelogram circumscribing a circle is a rhombus. October 6, 2020 Category: Chapter 10 - Circles , Maths , NCERT Class 10 ,
Prove that the angle between the two tangents drawn from an external point to a circle is supplementary to the angle subtended by the line-segment joining the points of contact at the centre.
06
Oct
Prove that the angle between the two tangents drawn from an external point to a circle is supplementary to the angle subtended by the line-segment joining the points of contact at the centre. Prove that the angle between the two tangents drawn from an external point to a circle is supplementary to the angle subtended [...]