Answer:
x = 29.2
Explanation:
Given 
Perpendicuar=10 
Angle=20 degrees 
Hypotenuse=x 
We will use the trigonometric ratios of right angled triangle to solve this question. Since, we have to find x which is the hypotenuse of the given triangle. So we will use the ratio which involves perpendicular and hypotenuse. 
sin 20=Perpendicular/Hypotenuse 
sin 20=10/x 
x=10/sin 20 
x=10/0.3420 
x=29.239 
Rounding off to nearest tenth. 
x=29.2