Observe the figure :
\Length of the adjacent side is .
Length of the hyptonuse side is
Find opposite side:
\Apply pythagorean theorem :
\
Substiute the values in the formula :
\.
Simplify :
\Find the trigonometric functions.
\Substitute ,
and
.
.
.
.
.
.
.
The exact values of the trigonometric functions are ,
,
,
,
and
.