Question

Find the length of the missing side. If necessary, round to the nearest tenth.

22.4

17.3

15

30

Answer 1

17.3

Explanation:

Gradpoint

a^2 + b^2 = c^2 ( )

10^2 + b^2 = 20^2 ( 10 20 )

100 + b^2 = 400 )

100 + b^2 -100 = 400 - 100 ( 100 )

b^2 = 300

b^2 300 ( )

b = 17.3205080757 ()

17.3

Answer 2

17.3

Explanation:

This is a 30-60-90 triangle. The length of the hypotenuse is twice the length of the shorter leg. The length of the longer leg is √3 times the length of the shorter leg. Here, b, the length of the longer leg, is 10√3, or about 17.3.