Question

how do you solve cos(2pi)? thanks in advance

Answer 1

Well there is a couple of ways to go about this problem. You could graph it or you could get an exact number.

Try putting cos(2pi) into your calculator to get a decimal answer.

Answer 2

with a calculator, but people memorize the sin, cos and tan of "special" angles
2 pi is a special angle.

Answer 3

its 1

Answer 4

thanks for the responses! i thought there was a way to solve it by hand.. i'll just memorize it then!

Answer 5

Think graphically