Answer:
13.32
Explanation:
if the missing side length is b,
step 1.) b^2 = 18^2 + 8^2 - 2(8)(18)(cos43)
step 2.) b^2 = 177.3701
then take square root of 177.3701
step 3.) √(b^2) = √(177.3701)
step 4.) b = 13.32
see ya have a good day
1. a=22.18394
2. 13.31803
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