cos(x)= 21/29

Lösung

cos (x) = \frac{21}{29}

x = 0.76101 \dots + 2 πn, x = 2 π - 0.76101 \dots + 2 πn

Grad

x = 43.60281 \dots^{\circ} + 36 0^{\circ} n, x = 316.39718 \dots^{\circ} + 36 0^{\circ} n

Schritte zur Lösung

cos (x) = \frac{21}{29}

Wende die Eigenschaften der Trigonometrie an

cos (x) = \frac{21}{29}

Allgemeine Lösung für

cos (x) = \frac{21}{29}

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

x = arccos (\frac{21}{29}) + 2 πn, x = 2 π - arccos (\frac{21}{29}) + 2 πn

x = arccos (\frac{21}{29}) + 2 πn, x = 2 π - arccos (\frac{21}{29}) + 2 πn

Zeige Lösungen in Dezimalform

x = 0.76101 \dots + 2 πn, x = 2 π - 0.76101 \dots + 2 πn

\frac{4}{sin ( 104.4 8 ^{\circ} )} = \frac{2}{sin ( a )}

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

cot (2 x) = 1.732

sin (9 0^{\circ} - a) = \frac{1}{1.63}

tan (3 x) = 1, - 2 π \leq x \leq 2 π