The domain of it is d: [1,+infinity) and the range is r: (-infinity,0].
Answer: 
Step-by-step explanation:
<u>The goal of the question</u>
Find the value of 2abcosC
<u>Given information</u>
a = 4
b = 3
c = 2
<u>Given formula (Law of Cosine)</u>

<u>Substitute values into the formula (Leave 2abcosC as it is)</u>

<u>Simplify the exponents</u>

<u>Simplify by addition</u>

<u>Add 2abcosC on both sides</u>


<u>Subtract 4 on both sides</u>


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Answer:
C
Step-by-step explanation:
Under the translation
(x, y ) → (x + 3, y - 4 )
Add 3 to the x-coordinate and subtract 4 from the y- coordinate of the original points, that is
(- 5, 2 ) → (- 5 + 3, 2 - 4 ) → (- 2, - 2 ) → C
Multiply like this. And it gives you your answer.
7.8•7.8•7.8
The measure of the fourth angel is 87°