The SIN function returns a sine value of the parameter. The argument x must be a radian value. The return value is a DOUBLE type.
SIN ( x )
SELECT SIN(pi()/6), SIN(pi()/3), SIN(pi());
sin( pi()/6) sin( pi()/3) sin( pi())
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4.999999999999999e-01 8.660254037844386e-01 1.224646799147353e-16