Lösung 4.3:3b
Aus Online Mathematik Brückenkurs 1
(Unterschied zwischen Versionen)
K |
K (hat „Solution 4.3:3b“ nach „Lösung 4.3:3b“ verschoben: Robot: moved page) |
Version vom 15:02, 22. Okt. 2008
The angle \displaystyle \pi-v makes the same angle with the negative x-axis as the angle \displaystyle v makes with the positive x-axis and this means that \displaystyle \pi-v is the reflection of \displaystyle v in the y-axis.
Under such reflection, the angle's y-coordinate does not change (but the x-coordinate changes sign) and therefore \displaystyle \sin (\pi-v) = \sin v = a\,.
