Question

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 130 degrees. Point B lies on circle A.

If arc CE is 130°, what is the measure of ∠CDE?

20°
40°
42.5°
50°

Answer 1

@phi can you help me?

Answer 2

Please help

Answer 3

50 degrees

Answer 4

there is a theorem that a tangent to a circle is always perpendicular to the line dropped from the centre on the same

Answer 5

Thank you!

Answer 6

You're welcome! :-)

Answer 7

Can you help with another one @wrik003 ???