Alexa is constructing a circle inscribed in a triangle. She has partially completed the construction, as shown below. What shoul
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Answer:
<em>Proof in the explanation</em>
Step-by-step explanation:
<u>Trigonometric Equalities</u>
Those are expressions involving trigonometric functions which must be proven, generally working on only one side of the equality
For this particular equality, we'll use the following equation
The equality we want to prove is
Let's set the following variables:
And modify the first variable:
Now with the second variable
Knowing that
We compute the other two trigonometric functions of X and Y
Computing
Then
Now we replace all in the first equality:
Thus, proven
