Question

AC is tangent to circle o at point C.
What is the measure of <OAC​

Answer 1

Answer: 27

Step-by-step explanation: Khan academy

Answer 2

∠OAC = 27°

Explanation:

When a line is tangent to a circle, the part where the radius meets with the line of tangency will be a right angle. Since we know this, we know that ∠C is equal to 90°. We also know that all of the angles in a triangle will add up to be 180°.

We can now add up the two angles we know and subtract it from 180° to get the measurement of ∠OAC.

`90+63=153`

`180-153=27`

∠OAC = 27°