PLEASE HELP ! worth 18 points :) Using the Law of Cosines Given SAS
Information
Z
Find the value of x to the nearest tenth.
Which of the following equations correctly sets up
the law of cosines to solve for x?
552 - 52 +82-25)(8)· cos(X)
2-52 +82-2(5)(8).cos(559)
O * - (5+8) -2(5)(8).cos(559)
552 - 52 +82-2(5)(8) cos(x)
5
55°
Y
DONE
8

x = 6.6

Step-by-step explanation:

law of cosines:

x² = b² + c² - 2ac · cosX

x² = 5² + 8² - 2(5 · 8) · cos 55°

x² = 25 + 64 - 80· cos 55°

x² = 25 + 64 - 45.89

x² = 89 - 45.89

x² = 43.11

x = √43.11

x ≈ 6.6

if x decreases by 4 then y increases by 10

step-by-step explanation:

the equation cos(35) =a/25 can be used to find the length of bc what is the length of bc? round to the nearest tenth

step-by-step explanation: