cos^2(pi/7)-sin^2(pi/7)

Lösung

cos^{2} (\frac{π}{7}) - sin^{2} (\frac{π}{7})

0.62348 \dots

Schritte zur Lösung

cos^{2} (\frac{π}{7}) - sin^{2} (\frac{π}{7})

Vereinfache zur Dezimalform

= 0.62348 \dots

arcsin (\frac{0.4}{0.5})

\frac{4}{tan ( 6 0 ^{\circ} )}

sin^{2} (5 0^{\circ}) + cos^{2} (5 0^{\circ})

arccos (sin (- \frac{11 π}{6}))

arccos (\frac{9}{14})