Answer:
-13.8 cm
Step-by-step explanation:
Use SohCahToa method for Sin, Cos, Tan
since this is a right triangle, your hypotenuse is given, 18
the side opposite of your angle 48 is h
so you can use the Sine=opposite/hypotenuse to get h
Sine(48)= h/18
multiple 18 on both sides
18Sine(48)=h, input in your calculator
=-13.8