cos(θ)=-2/7

Lösung

cos (θ) = - \frac{2}{7}

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

Grad

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

Schritte zur Lösung

cos (θ) = - \frac{2}{7}

Wende die Eigenschaften der Trigonometrie an

cos (θ) = - \frac{2}{7}

Allgemeine Lösung für

cos (θ) = - \frac{2}{7}

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

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

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

Zeige Lösungen in Dezimalform

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

so l v e f or k, cos (k l) = 0

tan (2 x) = - \frac{- 270 - 120}{130}

3 tan (x + 4 3^{\circ}) = 2 cos (x + 4 3^{\circ})

4 sin (x) = 3 sec (x)

\frac{sin ( 55.01 - x )}{sin ( x )} = \frac{1200}{500}