The Leaning tower of pisa is 55.9m tall and leans 5.5 degrees from the vertical. If its shadow is 90.0m long, what is the distance from the top of the tower to the top of the edge of it’s shadow? Assume that the ground is level.

Answer 1

You don't say if the sun is showing on its forward or its backwards leaning side.

One triangle would have sides of 55.9m 90 m and an angle of 84.5° between

simple application of the cosine law to find the distance between the end of the shadow and the top of the tower.

Repeat the calculation using an angle of 95.5° for the other case

Answer 2

No, it’s not right instead of subtracting 5.5 degree from 90, you should add 5.5 into 90. Then you will get the right answer.