cos(x)= 8/9

Lösung

cos (x) = \frac{8}{9}

x = 0.47588 \dots + 2 πn, x = 2 π - 0.47588 \dots + 2 πn

Grad

x = 27.26604 \dots^{\circ} + 36 0^{\circ} n, x = 332.73395 \dots^{\circ} + 36 0^{\circ} n

Schritte zur Lösung

cos (x) = \frac{8}{9}

Wende die Eigenschaften der Trigonometrie an

cos (x) = \frac{8}{9}

Allgemeine Lösung für

cos (x) = \frac{8}{9}

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

x = arccos (\frac{8}{9}) + 2 πn, x = 2 π - arccos (\frac{8}{9}) + 2 πn

x = arccos (\frac{8}{9}) + 2 πn, x = 2 π - arccos (\frac{8}{9}) + 2 πn

Zeige Lösungen in Dezimalform

x = 0.47588 \dots + 2 πn, x = 2 π - 0.47588 \dots + 2 πn

tan (4 θ) = 0

4 sin (x) = tan (x)

sin (a) = \frac{7}{25}

sin (θ) = 0.65

tan^{2} (x) - 4 tan (x) + 1 = 0