U need to find from table although
37 degrees is a comonly occuring in questions so just remember the following
37 degree is an angle of a right angle triangle whose sides are 3units. 4 units and 5 units whose base is 4, hypotenuse 5 and perpendicular is 3.
Thus
sin 37 = 3/5
cos 37 = 4/5 and
tan 37 = 3/4
I hope that helps.