Maths
In Fig. 10.12, ∠ABC = 45º, prove that OA ⊥ OC.
02
Jul
In Fig. 10.12, ∠ABC = 45º, prove that OA ⊥ OC. ∠ABC = 45º In Fig. 10.12 prove that OA ⊥ OC. July 2, 2021 Category: Chapter 10 - Circles , Maths , NCERT Class 9 ,
In Fig. 10.11, AOC is a diameter of the circle and arc AXB =1/2 arc BYC. Find ∠BOC.
02
Jul
In Fig. 10.11, AOC is a diameter of the circle and arc AXB =1/2 arc BYC. Find ∠BOC. AOC is a diameter of the circle and arc AXB =1/2 arc BYC. Find ∠BOC. In Fig. 10.11 July 2, 2021 Category: Chapter 10 - Circles , Maths , NCERT Class 9 ,
Two chords of a circle of lengths 10 cm and 8 cm are at the distances 8.0 cm and 3.5 cm, respectively from the centre
02
Jul
Two chords of a circle of lengths 10 cm and 8 cm are at the distances 8.0 cm and 3.5 cm, respectively from the centre respectively from the centre Two chords of a circle of lengths 10 cm and 8 cm are at the distances 8.0 cm and 3.5 cm July 2, 2021 Category: Chapter [...]
The angles subtended by a chord at any two points of a circle are equal.
02
Jul
The angles subtended by a chord at any two points of a circle are equal. The angles subtended by a chord at any two points of a circle are equal. July 2, 2021 Category: Chapter 10 - Circles , Maths , NCERT Class 9 ,
In Fig. 10.2, AB and CD are two equal chords of a circle with centre O. OP and OQ are perpendiculars on chords AB and CD, respectively. If ∠POQ = 150º, then ∠APQ is equal to
02
Jul
In Fig. 10.2, AB and CD are two equal chords of a circle with centre O. OP and OQ are perpendiculars on chords AB and CD, respectively. If ∠POQ = 150º, then ∠APQ is equal to AB and CD are two equal chords of a circle with centre O. OP and OQ are perpendiculars on [...]
In Fig. 10.1, two congruent circles have centres O and O′. Arc AXB subtends an angle of 75º at the centre O and arc A′ Y B′ subtends an angle of 25º at the centre O′. Then the ratio of arcs A X B and A′ Y B′ is:
02
Jul
In Fig. 10.1, two congruent circles have centres O and O′. Arc AXB subtends an angle of 75º at the centre O and arc A′ Y B′ subtends an angle of 25º at the centre O′. Then the ratio of arcs A X B and A′ Y B′ is: In Fig. 10.1 two congruent circles [...]
14. In Fig. 10.21, O is the centre of the circle, BD = OD and CD ⊥ AB. Find ∠CAB.
02
Jul
14. In Fig. 10.21, O is the centre of the circle, BD = OD and CD ⊥ AB. Find ∠CAB. 14. In Fig. 10.21 BD = OD and CD ⊥ AB. Find ∠CAB. O is the centre of the circle July 2, 2021 Category: Chapter 10 - Circles , Maths , NCERT Class 9 ,
13. In Fig. 10.20,O is the centre of the circle, ∠BCO = 30°. Find x and y
02
Jul
13. In Fig. 10.20,O is the centre of the circle, ∠BCO = 30°. Find x and y ∠BCO = 30°. Find x and y 13. In Fig. 10.20 O is the centre of the circle July 2, 2021 Category: Chapter 10 - Circles , Maths , NCERT Class 9 ,
12. AB and AC are two chords of a circle of radius r such that AB = 2AC. If p and q are the distances of AB and AC from the centre, prove that 4q^2 = p^2 + 3r^2.
02
Jul
12. AB and AC are two chords of a circle of radius r such that AB = 2AC. If p and q are the distances of AB and AC from the centre, prove that 4q^2 = p^2 + 3r^2. 12. AB and AC are two chords of a circle of radius r such that AB [...]
11. Two equal chords AB and CD of a circle when produced intersect at a point P. Prove that PB = PD.
02
Jul
11. Two equal chords AB and CD of a circle when produced intersect at a point P. Prove that PB = PD. 11. Two equal chords AB and CD of a circle when produced intersect at a point P. Prove that PB = PD. July 2, 2021 Category: Chapter 10 - Circles , Maths , [...]