cos(x)=-15/17

Lösung

cos (x) = - \frac{15}{17}

x = 2.65163 \dots + 2 πn, x = - 2.65163 \dots + 2 πn

Grad

x = 151.92751 \dots^{\circ} + 36 0^{\circ} n, x = - 151.92751 \dots^{\circ} + 36 0^{\circ} n

Schritte zur Lösung

cos (x) = - \frac{15}{17}

Wende die Eigenschaften der Trigonometrie an

cos (x) = - \frac{15}{17}

Allgemeine Lösung für

cos (x) = - \frac{15}{17}

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

x = arccos (- \frac{15}{17}) + 2 πn, x = - arccos (- \frac{15}{17}) + 2 πn

x = arccos (- \frac{15}{17}) + 2 πn, x = - arccos (- \frac{15}{17}) + 2 πn

Zeige Lösungen in Dezimalform

x = 2.65163 \dots + 2 πn, x = - 2.65163 \dots + 2 πn

sin (x) = \frac{4}{11}

cos (x) = 0.64

so l v e f or x, cosh (x) = 0

cos (x) = 0.57

sin^{2} (θ) + 3 cos (2 θ) = 2