Answer 3.2:5
From Förberedande kurs i matematik 2
| a) | \displaystyle \pi | b) | \displaystyle \displaystyle\frac{3\pi}{4} |
| c) | \displaystyle -\displaystyle\frac{\pi}{12}\, or \displaystyle \,\displaystyle\frac{23}{12}\pi | d) | \displaystyle \displaystyle\frac{\pi}{4} |
