Let
be an angle in standard position with
a point on the terminal side of
and
.
,
,
,
,
, and
.
The point is
.
Find the value of
.
Apply formula:
.
Substitute the values
and
in above formula.



.
,
,
,
,
, and
.
The exact values of the trigonometric functions are
,
,
,
,
, and
.