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The Unit Circle

Let's do some!

sin( pi / 6 )up and down guy , short , positive
up and down guy

short
positive

1 / 2
cos( 7 * pi / 6 )back and forth guy , long, negative
back and forth guy

long
negative

- square root( 3 ) / 2
sin( - pi / 4 )up and down guy , medium , negativeup and down guy

medium
negative

- square root ( 2 ) / 2

 

YOUR TURN:

cos( 5 * pi / 4 )

 

sin( 2 * pi / 3 )