Answer:
m is equal to

Explanation:
We can use the cosine function to evaluate m.
Note that
is the hypotenuse in this triangle.

is the adjacent side
is the hypotenuse
Lets look at the 60 degree angle.
The side adjacent to it is
.
Therefore we can say that

Lets solve for
.
is equal to
.

Multiply the numerator of the first fraction by the denominator of the second fraction. Set this equal to the product of the denominator of the first fraction and the numerator of the second fraction.
