CPM Homework Help : CCG Problem 6-15

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Home > CCG > Chapter 6 > Lesson 6.1.2 > Problem 6-15

6-15.

Examine the triangles below. For each one, solve for $x$ and name which tool you used. Show all work.

Hint (a):
Which trigonometric ratio can you use to solve for $x$ ?

Hint 1(b):
What do the tick marks on the sides of the triangle mean?
How can you use that knowledge to solve for $x$ ?
Hint 2(b):
Because of the marks, the lengths of the sides are the same.
Hint 3(b):
Since this is a Right Isosceles triangle, use the Pythagorean Theorem.
Answer (b):
$x\approx9.9$

Hint (c):
Use the Law of Cosines to solve for $x$ .
Answer (c):
$x\approx9.54$

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