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Janiek Buysrogge · Answer 1 · 2023-11-10T02:49:23+0000

-Write a ratio

tan 0 = opposite side / adjacent side

Substitution

tan 40 = 18 / x

Solve for x

x = 18 / tan 40

x = 18 / 0.839

Result

x = 21.45

$Label the given sides opposite adjacent or hypotenusewrite a ratio(fraction)aolve-example-1$