Although you may use the default calculator on Mac but for quick calculations Spotlight also includes calculator feature where users can directly enter math quires to get faster calculated results. Follow the simple instructions written below to know that how Spotlight works as calculator.
Use Spotlight to perform mathematical calculations
Just type your mathematical query in Spotlight search field in right upper corner of your Mac screen, it quickly shows the results automatically
You can also perform Trigonometry, Exponential and Logarithm.
sin(0.3)= 0.295 in radian.
cosinus cos(), tangent tan(), arc sinus asin(), arc cosinus acos(), arc tangent atan(),
Exponential and Logarithm
exp(), pow(), sqrt(), cbrt(), log()
for complete list of functions see the math libarary