Question

In the given figure, chord AB and CD are equal. I LOBA = 55°. then find the measure at ZCOR
D
550
B
A
c) 45
d) 70
a) 550
b) 600​

Answer 1

Answer:

AB=CD

∆AOB =~ ∆COD

angle COD = angle AOB

angle AOB= 180-2( OBA)

= 180-2 (55)

= 180-110

= 70