cos(x)=-0.8

Lösung

cos (x) = - 0.8

x = 2.49809 \dots + 2 πn, x = - 2.49809 \dots + 2 πn

Grad

x = 143.13010 \dots^{\circ} + 36 0^{\circ} n, x = - 143.13010 \dots^{\circ} + 36 0^{\circ} n

Schritte zur Lösung

cos (x) = - 0.8

Wende die Eigenschaften der Trigonometrie an

cos (x) = - 0.8

Allgemeine Lösung für

cos (x) = - 0.8

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

x = arccos (- 0.8) + 2 πn, x = - arccos (- 0.8) + 2 πn

x = arccos (- 0.8) + 2 πn, x = - arccos (- 0.8) + 2 πn

Zeige Lösungen in Dezimalform

x = 2.49809 \dots + 2 πn, x = - 2.49809 \dots + 2 πn

8 sin (x) cos (x) - 3 cos (x) = 0

sin (x) + 2 = 3, 0^{\circ} < x < 36 0^{\circ}

cos (\frac{2 x}{3}) = 0

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

- 2 sin (t) + 2 cos (2 t) = 0