What value of `y` would make `A O B` a line in Figure, if `/_A O C=4y\ a n d\ /_B O C=(6y+30)`

What value of y would make AOB a line in Figure,if /_AOC=4y and /_BOC=(6y+30)

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

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

In figure, A B\ a n d\ C D are straight lines and O P\ a n d\ O Q are respectively the bisectors of angles /_B O D\ a n d\ /_A O C . Show that the rays O P\ a n d\ O Q are in the same line.

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

In Figure, lines A B ,\ C D\ a n d\ E F intersect at O . Find the measures of /_A O C ,\ /_C O F ,\ /_D O E\ a n d\ /_B O F .

Two lines A B\ a n d\ C D intersect at Odot If /_A O C+/_C O B+/_B O D=270^0 , find the measures of /_A O C ,\ /_C O B ,\ /_B O D and /_D O A .

Two lines A B\ a n d\ C D intersect at Odot If /_A O C+/_C O B+/_B O D=270^0 , find the measures of /_A O C ,\ /_C O B ,\ /_B O D and /_D O A .

In Figure, given that /_A O C=/_A C O\ a n d\ /_B O D=/_B D O . Prove that A C||D B

In Figure, lines A B\ a n d\ C D intersect at O . If /_A O C+\ /_B O E=70^0 and \ /_B O D=40^0, find /_B O E and reflex /_C O E