If the height of the lighthouse is 60 meters and the angle of elevation is 48°, which of the following may be used to find the distance, z, between the boat and the base of the lighthouse?
a
tan 48 degrees equals z over 60
b
tan 48 degrees equals 60 over z
c
cos 48 degrees equals z over 60
d
cos 48 degrees equals 60 over z