Do all the trig functions have domain equal to all real numb

Do all the trig functions have domain equal to all real numbers? Why or why not?

Solution

no all the trigononetric functions doesnt have the domain of Real number

basically domain is nothing but the values of x where the function is defined

for example sinx and cosx is defined for all Real numbers

Tanx is defined for all real numbers except pi/2 + k pi, k is an integer

cotx is defined for all real numbers except k pi, k is an integer.

secx is defined for all real numbers except pi/2 + k pi, n is an integer.

cosecx is defined for all real numbers except k pi, k is an integer.