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Tangents and Perpendicular Radii

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Explanations 2

A tangent is a line which only touches a circle at 111 single point on its circumference. When the tangent touches the circle, the radius touching that point on the circumferenc…
By Vivian Loh
A tangent to a circle is a line that touches the circle at exactly one point. An important theorem regarding tangent lines is the following: A line tangent to a circle is perpen…
By Sujay Kazi

Problems 1

Let a line be tangent to Circle O and intersect the circle at A. Let B be another point on the tangent line. If ∠{AOB}=30\angle\left\{AOB\right\}=30^{\text{}}∠{AOB}=30, find ∠{A…