`A B` is a diameter of a circle with centre `O` and radius `O D` is perpendicular to `A Bdot` If `C` is any point on arc `D B ,` find `/_B A D\ a n d\ /_A C D`

A B is a diameter of a circle with centre O and radius O D is perpendicular to A B . If C is any point on arc D B , find /_B A D\ a n d\ /_A C D .

Draw a circle with centre O and any radius. Draw A C\ a n d\ B D two perpendicular diameters of the circle. Join A B ,\ B C ,\ C D\ a n d\ D A .

A B\ a n d\ C D are diameters of a circle with centre Odot If /_O B D=50^0, find /_A O C

In Figure, find x . Further find /_B O C ,\ /_C O D\ a n d\ /_A O D .

In Figure, A B=A C\ a n d\ D B=D C , find the ratio /_A B D\ :\ /_A C D

In Fig.25, find /_xdot Further find /_B O C ,\ /_C O D\ a n d\ /_A O Ddot

In Figure, O is the centre of the circle and the measure of arc A B C is 100^0dot Determine /_A D C\ a n d\ /_A B C

A B is a diameter of a circle C(O ,\ r)dot Chord C D is equal to radius O Cdot If A C\ a n d\ B D when produced intersect at P , prove that /_A P B is constant.

In Fig. 10.36, A,B and C are three points on a circle with centre O such that \ /_B O C=\ 30^o and \ /_A O B =\ 60^o . If D is a point on the circle other than the arc ABC, find /_A D Cdot

In Figure, /_A=60^0\ a n d\ /_A B C=80^0, find /_D P C\ a n d\ /_B Q C