Find the length of CD.
Answer to Problem 13P
60.1 inches
Explanation of Solution
Formula Used:
Law of Cosine :
Law of Sine:
Calculation:
Represent the situation and solve :
All the angles can be calculated by the properties of vertically opposite angles, linear angles and sum of all the angles of a triangle is
Now, consider the lower triangle:
Use Law of Sine:
Again , use law of sine in the middle
Now, Use Law of Cosine to find CD:
So, CD = 60.1 inches
Chapter 12 Solutions
Algebra and Trigonometry: Structure and Method, Book 2
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