resembling its spoken expression; for example, consider cos , hat , inf , and lim . Spacing and typeface ... approx , arc , cos , cosh , del , det , dot , dotdot , dyad , exp , for…resembling its spoken expression; for example, consider cos , hat , inf , and lim . Spacing and typeface ... approx , arc , cos , cosh , del , det , dot , dotdot , dyad , exp , for…significantly extended. x ^ y (exponentiation) sin( x ) cos( x ) atan2( y , x ) log( x ) (baseReturn the arctangent of y/x in radians. cos( expr ) Return the cosine of expr , whichReturn the arctangent of y/x in radians. cos( expr ) Return the cosine of expr , whichReturn the arctangent of y/x in radians. cos( expr ) Return the cosine of expr , whichbetween -pi and pi. cos( x ) Cosine function, x in radians. exp( x ) Exponential functionsignificantly extended. x ^ y (exponentiation) sin( x ) cos( x ) atan2( y , x ) log( x ) (base