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Answer:
110°
Step-by-step explanation:
in a quadrilateral the sum of all the interior angles is 180°. since radius are always perpendicular to tangent so angle B and angle C is 90° each . angle A is given 70°so
70+90+90+angle O=360°
angle O= 110°
Answered by
1
Step-by-step explanation:
CA & BA are tangents and tangents are always at 90° to circle(from the point they pass)
Sum of all angles=360
90+90+70 +COB= 360
COB=360-70-90-90 = 110
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