Lindsay is out one night and notices that her body casts a shadow that is 1.8m long when she is standing 5mfrom the pole supporting a street light Lindsay is 1.5m tall.

Question

1-what is the angle of elevation to the street light ?
2- how high is the street light

Answer 1

The angle is given by her height, and shadow length. tanTheta= 1.5/1.8
You can to the second by similar triangles

h/1.5=1.8/(5+1.8)

check that.