Question

Find the missing side length


CAN SOMEONE PLEASE HELP ME?
PLEASEEEEE!!!

Answer 1

i believe the answer is 13

Answer 2

13.31803792

Explanation:

Law of Cosines

a= 8

b= 18

c= ?

`c^2=a^2b^2-2ab*cos(c)`

`c^2=8^2-18^2-2*8*18*cos(43)`

c = 64 + 324 - 2 * 8 * 18 * cos(43)

cos(43) = 0.7313537016

Order of Operations

64 + 324 - 2 * 8 * 18 * 0.7313537016 = 177.3701339

Square Root the answer

`√(177.3701339)` = 13.31803792