(a)
\Let
be a point in the first quadrant.
Graph the line through point
and the origin.
Label the length of the hypotenuse as
.
The line makes an angle with
-axis be
.
Draw a right angle triangle by connecting the points
,
, and the origin.
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(b)
\Length of opposite side to the angle
is
.
Length of adjacent side to the angle
is
.
Length of the hypotenuse is
.
Pythagorean Theorem :
.


The value of
in terms
and
is
.
(c)
\Trigonometric function :
.

Trigonometric function :
.

Trigonometric function :
.
.
(d)
\Let
.




The point
can be represented as
where
.
(e)
\Find slope of the line for the points
and
.
Slope of the line is
.



corresponds to the slope of the line.
(f)
\Find slope of the line perpendicular to the line in part (a).
\The slope of the line perpendicular to a line with slope
is
.
The slope of the line perpendicular to slope
is
.
Trigonometric function :
.


Slope of the line perpendicular to the line in part (a) in terms of
is
.
.(a)
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(b)
\The value of
in terms
and
is
.
(c)
\

.
(d)
\Write the point
as
Where
.
(e)
\Trigonometric ratio
is corresponds to the slope of the line.
(f)
\Slope of the line perpendicular to the line in part (a) in terms of
is
.