I'm in over my head and need some help with this question.
Sorry if this is too simple for you but I'm really struggling. I can't for the life of me figure out how to write the angles A in terms of B or how to get formula for tan b in terms Tan ${B\over 2}$ using these coordinates. Any help of direction would be greatly appreciated.
- Q1 Express Angle A in terms of angle B, stating all theorems used.
- Q2 deduce a formula for tan B in terms of tan ${B\over 2}$ using parameterisation a in pic.
I have it that $A= {B\over 2}$ is it that simple @almagest?
2: 
Hint: try drawing a few more lines.