The given triangle is a right angle triangle. Taking angle 18 degrees as the reference angle, then
hypotenuse = 14
opposite side = x
To find x, we would apply the sine trigonometric ratio which is expressed as
Sin# = opposite side/hypotenuse
# = 18 degrees
Thus, we have
Sin 18 = x/14
x = 14 Sin18
x = 14 * 0.309
x = 4.326
Rounding to the nearest tenth,
x = 4.3
