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Home > CCG > Chapter 7 > Lesson 7.2.4 > Problem 7-85


Examine the triangles below. For each, solve for and name which tool you use. Show all work.  

  1. A right triangle with a base of 9 centimeters and height of X centimeters. 40 degrees angle is opposite the 9 centimeter side.

    What trig ratio can you use to solve for ?

    , tangent

  1. A triangle with side lengths, 8 miles, and, x, miles. The angle opposite the, x, mile side is 63 degrees. The angle opposite the unknown side is 52 degrees.

    Find the measure of the unknown angle. Now what law can you use to solve for ?

  1. A triangle with side lengths 12 feet, 15 feet, and X feet. 68 degrees is in between the side lengths 12 feet and 15 feet.

    Use the Law of Cosines to solve for .

    , Law of Cosines