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Lösung 4.3:4c

Aus Online Mathematik Brückenkurs 1

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The formula for double angles gives

Vorlage:Displayed math

and from exercise b, we have sinv=1−b2 . Thus,

Vorlage:Displayed math

Von „http://wiki.sommarmatte.se/wikis/2009/bridgecourse1-TU-Berlin/index.php/L%C3%B6sung_4.3:4c“