We know that angle AEO is equal to 90° since the angle created by a radius and a tangent line is always 90°. We also know that angle ACO is 45° because CDOF is a square and CO is its diagonal (CDOF is a square because all of its angles are 90° and DO = OF as radii).
Now we can solve for angle EOD: Angle EOD = 360° – 60° – 45° – 90° = 165°.
The correct answer is D. ---------- Why wouldn't angle ADO be 90 degrees (line DO is the radius and it hits a tangential line of the triangle)?
If it were 90 degrees then the answer would be 360 – 60 – 90 – 90 = 120 degrees
Users browsing this forum: No registered users and 2 guests
You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot post attachments in this forum
GMAT(TM) and GMAT CAT (TM) are registered trademarks of the Graduate Management Admission Council(TM). The Graduate Management Admission Council(TM) does not endorse, nor is affiliated in any way with the owner or any content of this site.