Question

In the given figure, diameter AB of circle C (O, r) is extended to C. D and E are points on semi-circle ADEB such that CE = OA and DEC is a straight line. IF ∠AOD = 150°, then ∠DCA equals

Answer 1

Answer:

Here we know that points D E C are in the semicircle

since diameter divides the circle into two semi circles

we can use the theorem that angles in semi circle=90°

Hope it helps

Please use this answer for preparation and not for cheating