If `A ,\ B ,\ C` are three points on a circle with centre `O` such that `/_A O B=90^0` and `/_B O C=120^0,` then `/_A B C=` `60^0` (b) `75^0` (c) `90^0` (d) `135^0`

If A ,\ B ,\ C are three points on a circle with centre O such that /_A O B=90^0 and /_B O C=120^0, then /_A B C= (a) 60^0 (b) 75^0 (c) 90^0 (d) 135^0

If A,B,C are three points on a circle with centre O such that /_AOB=90^(0) and /_BOC=120^(0), then /_ABC=60^(0)(b)75^(0) (c) 90^(@)(d)135^(@) ,then /_ABC=60^(0)(b)75^(0)

In Figure, O is the centre of the circle such that /_A O C\ =130^0,\ then /_A B C= (a) 130^0 (b) 115^0 (c) 65^0 (d) 165^0

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, if /_A O B=80^0a n d\ /_A B C=30^0, then find /_C A O

The diagonals of a parallelogram A B C D intersect at O . If /_B O C=90^0\ a n d\ /_B D C=50^0, then /_O A B= (a) 40^0 (b) 50^0 (c) 10^0 (d) 90^0

The diagonals of a parallelogram A B C D intersect at O . If /_B O C=90^0\ a n d\ /_B D C=50^0, then /_O A B= 40^0 (b) 50^0 (c) 10^0 (d) 90^0

Line segments A B a n d C D intersect at O such that A C D Bdot If /_C A B=45^0a n d /_C D B=55^0, then /_B O D= 100^0 (b) 80^0 (c) 90^0 (d) 135^0

In Figure, If /_A B C=45^0, then /_A O C= (a) 45^0 (b) 60^0 (c) 75^0 (d) 90^0

In a A B C , if /_A+/_B=150^0 and /_B+/_C=75^0, then /_B= (a) 35^0 (b) 45^0 (c) 55^0 (d) 25^0