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प्रश्न
If O is the centre of the circle, find the value of x in each of the following figures
बेरीज
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उत्तर
In BOC,
OB = OC ...(radii)
So, OCB = OBC = 40°
In BOC,
BOC = 180° - (40° + 40°)
BOC = 180° - 80°
So,
x = `"BOC"/2`
x = `(100°)/2` = 50°.
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