cos(x)=(-2)/7

Lösung

cos (x) = \frac{- 2}{7}

x = 1.86054 \dots + 2 πn, x = - 1.86054 \dots + 2 πn

Grad

x = 106.60154 \dots^{\circ} + 36 0^{\circ} n, x = - 106.60154 \dots^{\circ} + 36 0^{\circ} n

Schritte zur Lösung

cos (x) = \frac{- 2}{7}

Wende Bruchregel an:

\frac{- a}{b} = - \frac{a}{b}

cos (x) = - \frac{2}{7}

Wende die Eigenschaften der Trigonometrie an

cos (x) = - \frac{2}{7}

Allgemeine Lösung für

cos (x) = - \frac{2}{7}

cos (x) = - a \Rightarrow x = arccos (- a) + 2 πn, x = - arccos (- a) + 2 πn

x = arccos (- \frac{2}{7}) + 2 πn, x = - arccos (- \frac{2}{7}) + 2 πn

x = arccos (- \frac{2}{7}) + 2 πn, x = - arccos (- \frac{2}{7}) + 2 πn

Zeige Lösungen in Dezimalform

x = 1.86054 \dots + 2 πn, x = - 1.86054 \dots + 2 πn

csc (x) = \frac{9}{17}

tan (Θ) = 1.4

sin (x) = 0.51303

sin (x) = \frac{- \frac{4}{3} 3}{\frac{8}{3} 3}

sec (a) = \frac{5}{4}