MathEMATICS
posted by Chloe .
high fountain of water is located at the center of a circular pool. Not wishing to get his feet wet, a student walks around the pool and measures its circumference to be 15.0 m. Next, the student stands at the edge of the pool and uses a protractor to gauge the angle of elevation at the bottom of the fountain to be 55.0°. How high is the fountain ?

radius=15/2PI
tan55=h/r
h= r tan 55 
h=r.tan a=1/2pi.tan a=15m/2pi.tan55deg.=3.41m