Wie findet man # sin ^ -1 (cos (pi / 6)) #?

Antworten:

#color(blue)(sin^-1 (cos (pi/6)) = pi/3 " or " 60^@#

Erläuterung:

www.math-only-math.com/images/trigonometrical-ratios-table.png

#"Let " theta = sin^-1 (cos (pi/6))#

Aus der Tabelle oben #cos (pi/6) = (sqrt3/2)#

#:. theta = sin^-1 (sqrt3/2)#

#sin theta = sqrt3/2#

Aber #sin 60 = sqrt3/2# wie in der Tabelle zu sehen.

Daher #color(blue)(theta = sin ^-1 (sin (60)) = 60^@ " or " pi/3#