Attachment 24926

Can anyone please explain to me how to get the missing answers? Thanks.

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- Sep 25th 2012, 12:04 PMAshirCircle theorems question
Attachment 24926

Can anyone please explain to me how to get the missing answers? Thanks. - Sep 25th 2012, 12:05 PMAshirRe: Circle theorems question
(just click on the pic to zoom in)

- Sep 25th 2012, 12:27 PMAshirRe: Circle theorems question
I found out ABC, but I can't figure out OAD.

- Sep 25th 2012, 01:10 PMbjhopperRe: Circle theorems question
value of angles

RCB =56

ABC=70.5

OAD=OAC + DCT

CAD =DCT

Triangle OAC is isosceles.Finish it after finding angleAOC - Sep 25th 2012, 01:21 PMAshirRe: Circle theorems question
How is ABC 70.5?

- Sep 25th 2012, 01:47 PMbjhopperRe: Circle theorems question
- Sep 26th 2012, 07:27 AMAshirRe: Circle theorems question
And? Opposite angles add up to 180 is the theory. Therefor ABC is 39. Why would it be one half of 141?

And I checked, my answers were right. - Sep 26th 2012, 11:44 AMbjhopperRe: Circle theorems question
if angle ADC =141 arc ADC =78,angle AOC =78 not obtuse as you show. I assumed that arc ADC =141

- Sep 26th 2012, 11:51 AMAshirRe: Circle theorems question
What arc?

- Sep 27th 2012, 09:23 AMAshirRe: Circle theorems question
Still in need of an answer.

- Sep 27th 2012, 06:08 PMbjhopperRe: Circle theorems question
angleOAD = 74 deg Ichanged your drawimg moving A closer to C making angle AOC acute