Lösung 4.2:5d
Aus Online Mathematik Brückenkurs 1
By subtracting 360° from 495°, we do not change the value of the tangent,
We know from exercise a that \displaystyle \cos 135^{\circ} = -1/\!\sqrt{2} and \displaystyle \sin 135^{\circ} = 1/\!\sqrt{2}\,, which gives
