Answer:
Step-by-step explanation:
Since this is a right angle triangle we can apply trigonometry formulae
SOH, CAH and TOA
In this case, we are going to apply Sine because we have opposite and hypotenuse
Then,
Sinθ=opposite/hypotenuse
Sin20=x/18
Cross multiply
x=18sin20
x=6.156
x is approximately 6.2 to the nearest tenths
