AOB is the diameter of a circle and C is a point on the circle. Angle OBC= 60°. Find angle OCA
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Step-by-step explanation:
From cone OBC,
OB=OC( both are radii)
- Therefore, cone OBC is an isolate triangle
✓OCB=✓OBC =60 degree.
- From cone ABC,
- Cone C is right angle
- ✓ACB=90 degree.
- ✓ACO+✓OCB=90 degree.
- ✓ACO+60=90
- ✓ACO=90-60=30 degree.
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