To describe: and correct the error in finding
Given information:
The given solution is:
Definition Used:
Let
Formula Used:
Theorem Used:
Pythagorean Theorem:
In a right triangle, the sum of the squares of the lengths of the legs equals the square of the length of the hypotenuse.
For the given triangle, this is:
Explanation:
The error in the given solution is that the identity used (
The correct identity is:
Now, find the correct solution.
It is known that
So, draw a right triangle with acute angle
Use the Pythagoras theorem to find the length of the opposite side.
Now, find the value of
Chapter 9 Solutions
Holt Mcdougal Larson Algebra 2: Student Edition 2012
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