Answer:


Explanation:
the ratio of sides of a 30-60-90° triangle, respectively, are 1 :
: 2
we can solve for 'x' using this proportion:
x/4 = 1/

now cross-multiply:
x = 4
x = 4/

we don't want to leave a radical in the denominator so we can multiply numerator and denominator by
to get:
4
/ 3 or

