Answer 4.2:2
From Förberedande kurs i matematik 1
| a) | \displaystyle \tan v=\displaystyle\frac{2}{5} | b) | \displaystyle \sin v=\displaystyle\frac{7}{11} |
| c) | \displaystyle \cos v=\displaystyle\frac{5}{7} | d) | \displaystyle \sin v=\displaystyle\frac{3}{5} |
| e) | \displaystyle v=30 ^\circ | f) | \displaystyle \sin \displaystyle\frac{v}{2}=\displaystyle\frac{1}{3} |
