arccos(4/(sqrt(26)))

Lösung

arccos (\frac{4}{26})

0.66896 \dots

Dezimale

38.33

Schritte zur Lösung

arccos (\frac{4}{26})

Vereinfache zur Dezimalform

= 0.66896 \dots

5 (cos (\frac{2 π}{5}) + i sin (\frac{2 π}{5}))

- 2 cos (1)

arctan (\frac{11}{12})

8 sin (3 6^{\circ})

arctan (\frac{11}{11})