The law of cosines states that:
c^2=a^2+b^2-2abcosC
You already have all the values for the variables with the exception of x so:
x^2=25+100-100cos60
x=√(125-100cos60)
x=√75
x≈8.66 to nearest one-hundredth...
Answer: A.8.7
Step-by-step explanation:
Answer: 14
Step-by-step :x +3 y = 15 , 2 x -y =14
but let me know if it's right ok
Answer:
Part A: 140
Step-by-step explanation:
Line ACE is a straight line meaning it equals 18 degrees. To find out what Angle CEF is you have to subtract 40 from 180. That gives you 140 degrees.
Hope its helpful!
Answer:
VHV
Step-by-step explanation: