Question

0 is the centre of this circle Angle AOB is 60 degree find x and y.
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Answer 1

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Answer 2

Answer:

If you know about the linear pair than you able to find out the angle AOC which is equals to 120 Degree

Angle AOC + Angle AOB = 180 (linear pair)

if angle AOB = 60

than Angle AOC = 180 - 60 = 120 Degree

if know heard about the half angle theorem or else if you know about the theorem in which the angle in the semi-circle is 90 degree , than in Triangle ABC which is in a semi-circle as BC is a diameter, So angle BAC = 90 degree

If you heard about the half- angle theorem than ACB = half(angle AOB) = 30 degree

So in Triangle ABC

BAC = 90 Degree

ACB = 30 Degree,

than Angle ABC = 60 (sum of the angles of the triangle is 180)

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