Question

Are you having trouble evaluating trig functions? sin(pi/2), cos(pi/4), etc. Here is a short youtube playlist about it:

http://www.youtube.com/mathteacher1729#g/c/9FE48FF0B7A3E3F4

Hope this helps all you trig students. :) (or helps those who need to brush up on trig for calc, etc.)

Answer 1

Cool Channel! Good Luck