Calculate the value of .
Calculate the value of .
Let's remember that the sum of angles in a triangle equals 180 degrees.
Therefore, to find , we will use the following equation:
Now let's substitute in the known data:
We'll factor out as a common term in the equation:
Let's next expand the parentheses:
Then, we'll combine the terms:
Now we'll move terms to opposite sides and maintain the appropriate sign:
Finally, we will divide both sides by 0.38 to get our answer: