arccos(x)=(79)/(9sqrt(70))

Lösung

arccos (x) = \frac{79}{9 70}

x = cos (\frac{79 70}{630})

Schritte zur Lösung

arccos (x) = \frac{79}{9 70}

Vereinfache

\frac{79}{9 70} : \frac{79 70}{630}

\frac{79}{9 70}

Multipliziere mit dem Konjugat

\frac{70}{70}

= \frac{79 70}{9 70 70}

97070 = 630

97070

Wende Radikal Regel an:

a a = a

7070 = 70

= 9 \cdot 70

Multipliziere die Zahlen:

9 \cdot 70 = 630

= 630

= \frac{79 70}{630}

arccos (x) = \frac{79 70}{630}

Wende die Eigenschaften der Trigonometrie an

arccos (x) = \frac{79 70}{630}

arccos (x) = a \Rightarrow x = cos (a)

x = cos (\frac{79 70}{630})

x = cos (\frac{79 70}{630})

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