7. In each of the following figures. O marks the centre of the circle. Find the size of each
unknown (lettered) angle.
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In the figure,
AC is the diameter of circle with centre O
∠DAC=37°
AD || BC
∠ACB=∠DAC (Alternate angles)
Hence,
x=37°
In Δ ABC
∠B=90° (angle in semicircle)
By angle sum property of triangle, we get,
∠x+∠y+∠B=180°
37°+∠y+90°=180°
∠y=180° −127°
We get,
∠y=53°
HOPE THIS HELPS
archanajhabnk1983:
wait is ur answer wrong or the answer in my book is wrong, x=35° and y=55° GIVEN IN MY BOOK
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here is the answer
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Let me khow if it is hlepful or not mark my answer brainlist if its correct
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