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Lösung 4.3:4f

Aus Online Mathematik Brückenkurs 1

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Using the addition formula for cosine, we can express cos(v−3) in terms of cosv and sinv,

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Since cosv=b and sinv=1−b2  we obtain

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