WZ←→ is tangent to circle O at point B.
2 answers:
Check the picture below.
bear in mind that the "point of tangency", namely where the tangent touches the circle, with the radius of a circle, are always at a right-angle, therefore ∡OBZ is a right-angle.
bear in mind that the "point of tangency", namely where the tangent touches the circle, with the radius of a circle, are always at a right-angle, therefore ∡OBZ is a right-angle.
Answer:
The correct option is 2.
Step-by-step explanation:
Given information: WZ is tangent to circle O at point B.
According to the tangent of circle theorem: The tangent line is perpendicular to the radius at the point of tangency. It means the angle formed on the point of tangency by tangent and radius is a right angle.
Since WZ is tangent to circle O at point B and OB is radius, therefore
Therefore correct option is 2.
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