sin 35 degrees=sin((7 pi)/36)
=0.57
Using a calculator-make sure it is set to deg. Look at the top of the screen and it should say DEG and not RAD
input 35
Push "sin" =0.57
The other option is to use a standard trig chart
http://math2.org/math/trig/tables.htm
Find the sin for 30 degrees and 5 degrees and add them together to get the sin for 35 degrees.