Missing Third Angle

You are given 2 out of 3 angles in a triangle, in degrees.

Write a function that classifies the missing angle as either "acute", "right", or "obtuse" based on its degrees.

• An acute angle is less than 90 degrees.
• A right angle is exactly 90 degrees.
• An obtuse angle is greater than 90 degrees (but less than 180 degrees).

For example: missing_angle(11, 20) should return "obtuse", since the missing angle would be 149 degrees, which makes it obtuse.

Examples

missing_angle(27, 59) ➞ "obtuse"

missing_angle(135, 11) ➞ "acute"

missing_angle(45, 45) ➞ "right"