Point p is on the circle ab is diameter of the circle ,apb is
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Given : Point p is on the circle ab is diameter of the circle ,
To Find : ∠apb
Solution:
ab is diameter of the circle ,
Hence ab divided circle in two equal arcs
ab divides circle in 2 semicircle
ab is a straight line and center lies on this
Hence ∠aob = 180° where o is center of the circle
Angle made by an arc at center = 2 * angle made by remaining circle
Hence 180° = 2 * ∠apb
=> ∠apb = 90°
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