Question 550887
two sides of a 30 degrees -60 degrees -90 degrees triangle are 9 and 18. what is the length of the third side?
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The 18 side is the hypotenuse.
{{{a^2 + b^2 = c^2}}}
{{{9^2 + b^2 = 18^2}}}
{{{b^2 = 243}}}
{{{b = sqrt(243) = 9sqrt(3)}}}
b =~ 15.588