cos(a)= 2/3

Lösung

cos (a) = \frac{2}{3}

a = 0.84106 \dots + 2 πn, a = 2 π - 0.84106 \dots + 2 πn

Grad

a = 48.18968 \dots^{\circ} + 36 0^{\circ} n, a = 311.81031 \dots^{\circ} + 36 0^{\circ} n

Schritte zur Lösung

cos (a) = \frac{2}{3}

Wende die Eigenschaften der Trigonometrie an

cos (a) = \frac{2}{3}

Allgemeine Lösung für

cos (a) = \frac{2}{3}

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

a = arccos (\frac{2}{3}) + 2 πn, a = 2 π - arccos (\frac{2}{3}) + 2 πn

a = arccos (\frac{2}{3}) + 2 πn, a = 2 π - arccos (\frac{2}{3}) + 2 πn

Zeige Lösungen in Dezimalform

a = 0.84106 \dots + 2 πn, a = 2 π - 0.84106 \dots + 2 πn

- 1 = cos (π t)

2 tan^{2} (θ) = 6

2 sin (2 x) = 2 sin (x)

tan (x) = \frac{1}{7}

cos^{2} (x) = 0.1