

Change
to an improper fraction:


Since
we draw a right
triangle with an angle
with a hypotenuse of 5, which is
the same as the numerator of the fraction
, and with
a side opposite angle
of 2, which is the denominator
of the fraction
.
[You don't have to be accurate with your drawing, just any sketch of
a right triangle will do.]
Next we use the Pythagorean theorem to calculate the adjacent side
to angle
:
So we label the adjacent side as
Edwin