For this question, we're going to use the law of cosines.
The law of cosines is the following equation:
We know the values of a, b, and c. We want to find the measure of angle A.
Now, plug in these values into the equation.
Add both sides by
and subtract both sides by 16
Divide both sides by 36
Take the inverse cosine, or arc cosine, of both sides.
Using a calculator, you'll get the following result.
The measure of angle A should be 36.3 degrees. Hope this helps! :)
Sometimes true, depends on d. ex: -8 + -8 is negative, but -8 + 9 is positive
Answer:
Step-by-step explanation:
Given:
Answer:
$13.25
Step-by-step explanation:
First you add everything up to get you to $15.70, then the 20% is changed to .2 which you then multiply 15.70 by .2 giving you 3.14. You then take 15.70 minus 3.14 which then gets you to 12.56. Then you take the tax of 5.5% and times $12.56 by it, giving you 69 cents, as your tax. Add those together to get 13.25, and then your finished.
Base = 2 inches
Height = 8 inches
Area = b x h = 2 x 8 = 16
Perimeter = 2(8) + 2(2) = 20 inches