DE is tangent to Circle C at point D.
What is the measure of
Enter your answer in the box.
![DE is tangent to Circle C at point D What is the measure of Enter your answer in the box class=](https://us-static.z-dn.net/files/dac/e28a527423ae1c333d7e071536d5a485.png)
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