Johnny uses a mirror placed on level ground to measure the height of a building. Johnny's eyes are 6 feet above the ground and h

Question

3 years ago

6

Johnny uses a mirror placed on level ground to measure the height of a building. Johnny's eyes are 6 feet above the ground and h

e stands 4 feet away from the mirror. From that distance, Johnny is able to see the top of the building in the mirror as shown in the diagram below.
If the mirror is 45 feet away from the building’s base, how tall is the building
please show step by step

Mathematics

2 answers:

tensa zangetsu [6.8K] · Answer 1 · 2022-07-19T19:26:26+03:00

tensa zangetsu [6.8K]3 years ago

7 0

The answer is in the photo

VikaD [51] · Answer 2 · 2022-07-19T21:45:36+03:00

VikaD [51]3 years ago

3 0

Answer:

Step-by-step explanation:

θ = angle of incidence = angle of reflection

You have two similar triangles.

tanθ = 6/4 = h/45

h = 45×6/4 = 67.5 ft