Chapter 10 – Circles
Write ‘True’ or ‘False’ and justify your answer in each of the following : 3. The length of tangent from an external point P on a circle with centre O is always less than OP.
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Jul
Write ‘True’ or ‘False’ and justify your answer in each of the following : 3. The length of tangent from an external point P on a circle with centre O is always less than OP. Write ‘True’ or ‘False’ and justify your answer in each of the following : 3. The length of tangent from [...]
Write ‘True’ or ‘False’ and justify your answer in each of the following : 2. The length of tangent from an external point on a circle is always greater than the radius of the circle.
05
Jul
Write ‘True’ or ‘False’ and justify your answer in each of the following : 2. The length of tangent from an external point on a circle is always greater than the radius of the circle. Write ‘True’ or ‘False’ and justify your answer in each of the following : 2. The length of tangent from [...]
Write ‘True’ or ‘False’ and justify your answer in each of the following : 1. If a chord AB subtends an angle of 60° at the centre of a circle, then angle between the tangents at A and B is also 60°.
05
Jul
Write ‘True’ or ‘False’ and justify your answer in each of the following : 1. If a chord AB subtends an angle of 60° at the centre of a circle, then angle between the tangents at A and B is also 60°. then angle between the tangents at A and B is also 60°. Write [...]
9. If two tangents inclined at an angle 60° are drawn to a circle of radius 3 cm, then length of each tangent is equal to
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Jul
9. If two tangents inclined at an angle 60° are drawn to a circle of radius 3 cm, then length of each tangent is equal to 9. If two tangents inclined at an angle 60° are drawn to a circle of radius 3 cm then length of each tangent is equal to July 5, 2021 [...]
10. In Fig. 9.8, if PQR is the tangent to a circle at Q whose centre is O, AB is a chord parallel to PR and ∠BQR = 70°, then ∠AQB is equal to
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Jul
10. In Fig. 9.8, if PQR is the tangent to a circle at Q whose centre is O, AB is a chord parallel to PR and ∠BQR = 70°, then ∠AQB is equal to 10. In Fig. 9.8 AB is a chord parallel to PR and ∠BQR = 70° if PQR is the tangent to [...]
8. In Fig. 9.7, if PA and PB are tangents to the circle with centre O such that ∠APB = 50°, then ∠OAB is equal to
05
Jul
8. In Fig. 9.7, if PA and PB are tangents to the circle with centre O such that ∠APB = 50°, then ∠OAB is equal to 8. In Fig. 9.7 if PA and PB are tangents to the circle with centre O such that ∠APB = 50° then ∠OAB is equal to July 5, 2021 [...]
7. In Fig. 9.6, if O is the centre of a circle, PQ is a chord and the tangent PR at P makes an angle of 50° with PQ, then ∠POQ is equal to
05
Jul
7. In Fig. 9.6, if O is the centre of a circle, PQ is a chord and the tangent PR at P makes an angle of 50° with PQ, then ∠POQ is equal to 7. In Fig. 9.6 if O is the centre of a circle PQ is a chord and the tangent PR at [...]
6. In Fig. 9.5, AT is a tangent to the circle with centre O such that OT = 4 cm and ∠OTA = 30°. Then AT is equal to
05
Jul
6. In Fig. 9.5, AT is a tangent to the circle with centre O such that OT = 4 cm and ∠OTA = 30°. Then AT is equal to 6. In Fig. 9.5 AT is a tangent to the circle with centre O such that OT = 4 cm and ∠OTA = 30°. Then AT [...]
5. At one end A of a diameter AB of a circle of radius 5 cm, tangent XAY is drawn to the circle. The length of the chord CD parallel to XY and at a distance 8 cm from A is
05
Jul
5. At one end A of a diameter AB of a circle of radius 5 cm, tangent XAY is drawn to the circle. The length of the chord CD parallel to XY and at a distance 8 cm from A is 5. At one end A of a diameter AB of a circle of radius [...]
4. From 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. Then the area of the quadrilateral PQOR is
05
Jul
4. From 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. Then the area of the quadrilateral PQOR is 4. From a point P which is at a distance of [...]