Lines CD and DE are tangent to circle A as shown below: Lines CD and DE are tangent to circle A and intersect at point D. Arc CE measures 105 degrees. Point B lies on circle A. If arc CE is 105°, what is the measure of ∠ CDE? 52.5° 62.5° 75° 255°

Step-by-step explanation:

The point at which a tangent line touches the circle has a 90 degree angle

If we drew this and the connecting radii on paper it would form a quadrilateral so

105 + 90 + 90 + x = 360

105 + x = 180

x = 75

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c.

step-by-step explanation:

because first you have to add the 4x, 9x, and the 7x together and you get 20x and then you add the last numbers up and you get 5and then you put the subtraction sign in there and that's how you get the answer.