1. Watch the following Khan Academy video again as a refresher for how to find a missing angle.
2. Use the SOHCAHTOA ratios and a trig friendly calculator to find the following 'Missing Angles'. I have the key so you can check your work and make sure you are on the right track.
NOTE: The calculator buttons asin, acos, and atan are the same thing as taking the inverse of sin, cos or tangent.
3. Feel like you got it? If not look at this lesson before you continue on the next set of problems.