cos(x)=(7.2)/(9.4)

Lösung

cos (x) = \frac{7.2}{9.4}

x = 0.69826 \dots + 2 πn, x = 2 π - 0.69826 \dots + 2 πn

Grad

x = 40.00775 \dots^{\circ} + 36 0^{\circ} n, x = 319.99224 \dots^{\circ} + 36 0^{\circ} n

Schritte zur Lösung

cos (x) = \frac{7.2}{9.4}

Wende die Eigenschaften der Trigonometrie an

cos (x) = \frac{7.2}{9.4}

Allgemeine Lösung für

cos (x) = \frac{7.2}{9.4}

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

x = arccos (\frac{7.2}{9.4}) + 2 πn, x = 2 π - arccos (\frac{7.2}{9.4}) + 2 πn

x = arccos (\frac{7.2}{9.4}) + 2 πn, x = 2 π - arccos (\frac{7.2}{9.4}) + 2 πn

Zeige Lösungen in Dezimalform

x = 0.69826 \dots + 2 πn, x = 2 π - 0.69826 \dots + 2 πn

sin (θ) = - 2 - cos (θ)

sin (2 θ) = 3 cos (2 θ)

1 - cos (2 x) = sin (2 x)

cos (θ) = 5

2 cos^{2} (x) + 2 cos (x) = 0