solve it find value of x .......
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46° + 90° + X = 180°
154° + X = 180°
X = 26°
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O is the mid point of the circle C(O,r).
The diameter subtends an angle on the part of circle i.e. 90°.
There is an exterior angle on the triangle formed in the circle i.e. 160°.
Addition of internal opposite angles is equal to the exterior angle.
x+90° =160°
x=160°-90°
x=70°
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