GMAT Data Sufficiency (DS) | In the figure shown, point O is the centre of the semicircle and...

Hi there,

I encountered this question during the GMAT Prep online practice test 1.

Could someone please explain to me how Statement 1 is sufficient to find angle BAO?
The correct answer is (D).

Thanks!

Best regards
ST

Attachments File comment: Diagram from the practice test

GMATPrep1_Quant_Q10.JPG [ 62.63 KiB | Viewed 27 times ]

---