Question

AD is tangent to the circle with Centre O and OA is radius and angle AOB is equal to 30 degree find angle ADC
50 points will be given...​

Answer 1

Answer:

Angle ABO = Angle BAO = 30°

(OB=OA=radii)

Angle BOA = 180-(30+30)= 120°

Angle AOC = 180°- 120° = 60° (Linear pair)

Angle OAD + Angle ADO + Angle DOA = 180° (Angle sum property)

Angle ADO = 180° - (90° + 60°)

= 180° - 150°

= 30°

Hope it helps you.

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