Answer:
16.4
Step-by-step explanation:
For the 66° angle, the side with length 15 is the opposite leg.
The hypotenuse is x.
The trig ratio that relates the opposite leg to the hypotenuse is the sine.
sin A = opp/hyp
sin 66° = 15/x
x * sin 66° = 15
x = 15/sin 66°
x = 16.4
