Answer 4.2:4
From Förberedande kurs i matematik 1
| a) | \displaystyle \displaystyle \frac{\sqrt{3}}{2} | b) | \displaystyle \displaystyle \frac{1}{2} | c) | \displaystyle -1 |
| d) | \displaystyle 0 | e) | \displaystyle \displaystyle \frac{1}{\sqrt{3}} | f) | \displaystyle \sqrt{3} |
