In `/_\ABC, /_A=30^o` and `/_B=60^o` then find `/_C`

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

In Fig. 6.13, lines AB and CD intersect at O. If /_A O C\ +/_B O E=70^@ and /_B O D=40^@ , find /_B O E and reflex /_C O E .

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

In a Delta A B C ,\ \ /_A=x^o,\ \ /_B=3x^o and /_C=y^o . If 3y-5x=30 , prove that the triangle is right angled.

In Figure, if /_B A C=60^0\ a n d\ /_B C A=20^0,\ find /_A D C

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 A B C , /_A=60^0,\ /_B=80^0 and the bisectors of /_B\ a n d\ /_C meet at O . Find : (i) /_C (ii) /_B O Cdot

In Figure, A B C D is a parallelogram in which /_D A O=40^0,\ /_B A O=35^0\ a n d\ /_C O D=65^0dot Find: (i) /_A B O\ (ii) /_O D C (iii) /_A C B (iv) /_C B D

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

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