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Home > PC > Chapter 4 > Lesson 4.1.3 > Problem 4-40


If and , find and .

Draw and label a right triangle in the correct quadrant.

Calculate the length of the unknown side.
(Or you may know it because it is a Pythagorean Triple!) When you label it, think about if it should be positive or negative.

From the side lengths, you can find the and the .

Right triangle in third quadrant, horizontal leg on negative x axis, vertical leg on left labeled 5, hypotenyuse labeled 13.