Question

DOE?
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In the diagram, AB, AC and DE are tangents to circle
Ab, AC and DE are tangents to circle "O", and angle A = 20°. What is
СЕ
(D) 20°
(C) 60°
(A) 100°
(B) 80°​

Answer 1

Answer:

we can solve this using a short cut method

in ocba

a is 20 we know angle oca and angle oba is 90

so the angle COB should be 40.

if cob is 40 angle DOE should obviously be lesser.(look at the diagram.)

so Doe is 20