if you wanna solve for x, you have to try to get x by itself, right?
so,
tan36°= 12/x
---> multiply both sides by x
xtan36 = 12
---> now, solve for x by dividing both sides by tan36
so, you need to do 12/tan36
so when you plug that into your calc, you get: 16.5165... which rounds to 16.52
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