Math, asked by rajput49701, 9 months ago

Answer fast . I will report if anyone spams on it . Only right answer is acceptable . Don't come here for points . If answer is correct then I'll mark as brainliest.

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Answers

Answered by himanshisahu0620
1

Answer:

70°

Step-by-stepp explanation:

O is the circumcenter of triangle ABC . Therefore OA = OB = OC =radius of circumcircle.

In triangle ABC :-

Angle BAC+Angle ABC +Angle BCA=180°.

85°+AngleABC +75° =180°

Angle ABC =180°-160° = 20°.

In triangle OAC:-

OA =OC = radius of circumcircle.

so that angle OAC = angle OCA = x°(let).

Angle AOC = 2×Angle ABC = 2×20° = 40°.

Angle OAC + Angle OCA+ Angle AOC = 180°.

x`+ x° + 40° = 180°.

2x° = 180° - 40° = 140°.

x = 140°/2 = 70°.

Angle OAC = x° =70° , Answer.

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