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 Apr 15, 2021
 #1
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tan30 =   sin 30 / cos 30 =  1/2 / (sqrt(3)/2) = 1 / sqrt 3

 

tan30 = opposite / adjacent

1/sqrt 3 =   7 /x

 

x = 7 / (( 1/sqrt3)) = 7 sqrt 3

 Apr 15, 2021

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