Question

tan(60)=SQUARE ROOT 3=21/x

Answer 1

so that means

if

\[\tan(60) = \frac{21}{x}\]

then

\[x = \frac{21}{\tan(60)}\]

using the substitution for the exact value

\[x = \frac{21}{\sqrt{3}}\]

Answer 2

3

Answer 3

Can i simplify that

Answer 4

you may need to rational the denominator

\[\frac{21}{\sqrt{3}} \times \frac{\sqrt{3}}{\sqrt{3}} = \frac{21 \sqrt{3}}{3}\]

which can be simplified.