. Which function formula is
So far, you have solved for the angle θ
by knowing two sides and using three
trig functions. You will find it just as
easy to solve for the unknown sides of a right triangle when the angle θ and one side are
HERE IS THE PROCEDURE TO FOLLOW:
Look the problem over to see what is given and what you are asked to find.
Choose the function formula (sin, cos, or tan) that uses both the given values and
the unknown value you are asked to find.
Isolate the unknown quantity and place it to the left of the equal sign.
Using the trig tables, solve for the unknown value.
Study these rules carefully. If you have trouble choosing the correct
function formula In the remainder of this program, return to this page and
restudy the rules.