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>


Hope this helps!! :)
Please let me know if you have any questions
Answer:
10KL/1000L
8KL/800L
800L/8KL
Step-by-step explanation:
Sine and cosine has period of 2π and tangent has period of π
So basically same question as sin(0), cos(0), and tan(0)
sin(0) = 0
cos(0) = 1
tan(0) = sin(0) / cos(0) = 0 / 1 = 0
So final answers are sin(360°) = 0, cos(360°) = 1, tan(360°) = 0