arccos(x)=(8pi)/7

Lösung

arccos (x) = \frac{8 π}{7}

Keine L \overset{o}{¨} sung f \overset{u}{¨} r x \in R

Schritte zur Lösung

arccos (x) = \frac{8 π}{7}

0 \leq arccos (x) \leq π

Keine L \overset{o}{¨} sung f \overset{u}{¨} r x \in R

cos (2 x) = \frac{1}{4}

sin (θ) + 1 = 2 cos^{2} (θ)

sin (x) = \frac{5}{8.8}

cos^{2} (x) - sin^{2} (x) = - 1

2 cos (2 x) = 2