Solution 4.2:5c
From Förberedande kurs i matematik 1
(Difference between revisions)
m (Lösning 4.2:5c moved to Solution 4.2:5c: Robot: moved page) |
m |
||
(One intermediate revision not shown.) | |||
Line 1: | Line 1: | ||
- | {{ | + | If we express the angle 330° in radians, we obtain |
- | < | + | |
- | {{ | + | {{Displayed math||<math>330^{\circ} = 330^{\circ}\cdot \frac{\pi}{180^{\circ}}\ \text{radians} = \frac{11\pi}{6}\ \text{radians}</math>}} |
+ | |||
+ | and from exercise 3.3:1g, we know that | ||
+ | |||
+ | {{Displayed math||<math>\cos 330^{\circ} = \cos \frac{11\pi}{6} = \frac{\sqrt{3}}{2}\,\textrm{.}</math>}} |
Current revision
If we express the angle 330° in radians, we obtain
\displaystyle 330^{\circ} = 330^{\circ}\cdot \frac{\pi}{180^{\circ}}\ \text{radians} = \frac{11\pi}{6}\ \text{radians} |
and from exercise 3.3:1g, we know that
\displaystyle \cos 330^{\circ} = \cos \frac{11\pi}{6} = \frac{\sqrt{3}}{2}\,\textrm{.} |