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Lösung 4.3:1a

Aus Online Mathematik Brückenkurs 1

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Version vom 15:00, 22. Okt. 2008

If we draw the angle 5 on the unit circle, then it will have an x-coordinate that is equal to cos5.

In the figures, we see also that the only other angle between 0 and 2 which has the same cosine value, i.e. same x-coordinate, is the angle v=−5+2=95 on the opposite side of the x-axis.

Von „http://wiki.sommarmatte.se/wikis/2009/bridgecourse1-TU-Berlin/index.php/L%C3%B6sung_4.3:1a“