Answer:
B, 
Step-by-step explanation:
Using the law of cosines, which is 
, you can simply insert all the values.
c=|u+v|
a= r value of u (10)
b= r value of v (5)
To find C, you simply have to subtract v from u, and then subtract that number from 180 to find the reference angle.
I.E.: ∠135 - ∠30 = ∠105 ↔ 180 - 105 = 75 = C
so, the completed equation would be 10^{2} + 5^{2}- 2(10)(5)cos(75)
6x-6=8x
subtract 6x from both sides
-6=2x
divide both sides by 2
x= -3
Answer:
(-3,5) (-3,4)
5-4/-3--3=1/0
It is a vertical line so it's y∈R
Step-by-step explanation:
First rewrite each number in scientific form
Hello!
You can use the Pythagorean Theorem to solve this
c is the hypotenuse which is the side across the right angle
a and b are the other sides
Put in the values you know
Square the numbers
Add
Take the square root of both sides
15 = c
The answer is 15
Hope this helps!
