Joel races bikes. In his city, there are 4 4 lengths of race tracks. The chart shows the race tracks and each track's length in
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Given:
AD is diameter of the circle, AB is the tangent, and measure of arc ADC is 228 degrees.
To find:
The and
.
Solution:
AD is diameter of the circle. So, the measure of arc AD is 180 degrees.
The measure inscribed angle is half of the corresponding subtended arc.
AB is the tangent. So, because radius is perpendicular on the tangent and the point of tangency.
Therefore, and
.