Asked by Ariana
I have a diagram in which AB is a vertical cliff. BC is a vertical building 80m in height. P is a point on level ground 200m away from A. The angle of elevation of the bottom of the building from P is 44 degrees. What is the angle of elevation of the top of the building from P?
Answers
Answered by
Reiny
I will assume that the building with side BC is on top of the cliff and A is at the bottom of the cliff.
step1:
tan44= AB/200
AB = 200tan44
so AC = 80 + 200tan44
let angle CPA = Ø
tanØ = AC/200 = (80 + 200tan44)/200
tanØ = 1.365
Ø = 53.79°
step1:
tan44= AB/200
AB = 200tan44
so AC = 80 + 200tan44
let angle CPA = Ø
tanØ = AC/200 = (80 + 200tan44)/200
tanØ = 1.365
Ø = 53.79°
Answered by
Ariana
Thanks for your reply. The answer is correct!
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