acos(z)

Inverse cosine of complex number z.

See also asin toDeg toRad atan atan2

Example

acos( 0.5 )

1.0472

toDeg( acos( 0.5 ) )

60.0000

acos( 3 )

NaN

acos( 3+0j )

1.0094E-15 + 1.7627 j