cos(a)=-1/4

Lösung

cos (a) = - \frac{1}{4}

a = 1.82347 \dots + 2 πn, a = - 1.82347 \dots + 2 πn

Grad

a = 104.47751 \dots^{\circ} + 36 0^{\circ} n, a = - 104.47751 \dots^{\circ} + 36 0^{\circ} n

Schritte zur Lösung

cos (a) = - \frac{1}{4}

Wende die Eigenschaften der Trigonometrie an

cos (a) = - \frac{1}{4}

Allgemeine Lösung für

cos (a) = - \frac{1}{4}

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

a = arccos (- \frac{1}{4}) + 2 πn, a = - arccos (- \frac{1}{4}) + 2 πn

a = arccos (- \frac{1}{4}) + 2 πn, a = - arccos (- \frac{1}{4}) + 2 πn

Zeige Lösungen in Dezimalform

a = 1.82347 \dots + 2 πn, a = - 1.82347 \dots + 2 πn

- 8 sec^{2} (x) - 26 tan (x) = 12

tan (θ) = 0.3

tan (θ) = 0.8

2 tan (x) + sec^{2} (x) = 0

cos (x) = \frac{1}{9}