Question

1. how much more would you need to swing this door completely open (i.e. the door laying against the wall) if it was already open 68 degrees?

22 degrees
112 degrees
102 degrees
68 degrees

Explanation:

Step1: Know full - open angle

A door laying against the wall is open at a 90 - degree angle.

Step2: Calculate remaining angle

Subtract the current open angle from 90 degrees. Let the remaining angle be $\theta$, then $\theta=90 - 68$.
$90-68 = 22$

Answer:

22 degrees