Calculate each of the following values. Express your answers both exactly and as decimal approximations.
Draw a unit circle and locate
Remember that a full circle as
radians and a half circle has radians.
How many degrees is equivalent to
Draw a right triangle and use the special triangle relationship to find the exact value.
is equivalent to , of is .
of ? Locate on the unit circle.
Draw a right triangle.
is your reference angle.
relationship to find the exact value.