12.6.9 Trigonometric operations

Unsafe Operation: $flsin fl

Unsafe Operation: $flcos fl

Unsafe Operation: $fltan fl

Return the sine, cosine and tangent of the operand.

Unsafe Operation: $flasin fl

Unsafe Operation: $flacos fl

Unsafe Operation: $flatan fl

Unsafe Operation: $flatan fl1 fl2

Return the arcsine, arccosine and arctangent of the operand. When $flatan is applied to two arguments, it returns an equivalent of:

(angle (make-rectangular fl2 fl1))

Unsafe Operation: $flatan2 fl1 fl2

Return an equivalent of:

(angle (make-rectangular fl2 fl1))