cos(a)= 7/25

Lösung

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

a = 1.28700 \dots + 2 πn, a = 2 π - 1.28700 \dots + 2 πn

Grad

a = 73.73979 \dots^{\circ} + 36 0^{\circ} n, a = 286.26020 \dots^{\circ} + 36 0^{\circ} n

Schritte zur Lösung

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

Wende die Eigenschaften der Trigonometrie an

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

Allgemeine Lösung für

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

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

a = arccos (\frac{7}{25}) + 2 πn, a = 2 π - arccos (\frac{7}{25}) + 2 πn

a = arccos (\frac{7}{25}) + 2 πn, a = 2 π - arccos (\frac{7}{25}) + 2 πn

Zeige Lösungen in Dezimalform

a = 1.28700 \dots + 2 πn, a = 2 π - 1.28700 \dots + 2 πn

cos (x) = \frac{11}{14}

cot (3 8^{\circ}) = tan (2 x)

cos (θ) = 0.8126

cos (θ) = - \frac{4}{5}, tan (θ) < 0

16 sin^{2} (x) = 8