3 years ago

DE is tangent to Circle C at point D. What is the measure of Enter your answer in the box.

Mathematics

1 answer:

creativ13 [48]3 years ago

5 0

Answer:

39°

Step-by-step explanation:

A radius of a circle (segment CD) drawn to the point of tangency (D) intersects the tangent (line DE) at a 90-deg angle.

That makes m<D = 90.

m<D + m<C + m<E = 180

90 + 51 + m<E = 180

m<E = 39

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