cos(a)= 9/14

Lösung

cos (a) = \frac{9}{14}

a = 0.87257 \dots + 2 πn, a = 2 π - 0.87257 \dots + 2 πn

Grad

a = 49.99479 \dots^{\circ} + 36 0^{\circ} n, a = 310.00520 \dots^{\circ} + 36 0^{\circ} n

Schritte zur Lösung

cos (a) = \frac{9}{14}

Wende die Eigenschaften der Trigonometrie an

cos (a) = \frac{9}{14}

Allgemeine Lösung für

cos (a) = \frac{9}{14}

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

a = arccos (\frac{9}{14}) + 2 πn, a = 2 π - arccos (\frac{9}{14}) + 2 πn

a = arccos (\frac{9}{14}) + 2 πn, a = 2 π - arccos (\frac{9}{14}) + 2 πn

Zeige Lösungen in Dezimalform

a = 0.87257 \dots + 2 πn, a = 2 π - 0.87257 \dots + 2 πn

\frac{π}{2} = 2 sin (x)

cos (x) = (sin (x))^{2}

\frac{tan ( 2 θ )}{2} = tan (θ)

2 sin^{2} (3 x) - 3 cos (3 x) + 1 = 0, 0^{\circ} \leq x \leq 18 0^{\circ}

2 sin (\frac{x}{2}) = 1 - cos (x)