Angle of Depression

[nycmathguy]

Section 4.8

You say?

 

[MathLover1]

yes

 

[nycmathguy]

yes

I promise to show my work for this and other precalculus questions but only on Friday, Saturday and Sunday moving forward.

 

[nycmathguy]

yes

Top of tower to ground level where cell phone user is standing 5 miles away is 120 + 800 = 920 feet.

Where did 800 feet come from?

Well, 1200 - height where cell phone user is standing.

I get 1200 - 400 = 800.

Let x = angle of depression.

tan x = 920/5

arctan[tan x ] = arctan(920/5)

x = 89.69°

Yes?

 

[nycmathguy]

yes

Top of tower to ground level where cell phone user is standing 5 miles away is 120 + 800 = 920 feet.

Where did 800 feet come from?

Well, 1200 - height where cell phone user is standing.

I get 1200 - 400 = 800.

Let x = angle of depression.

tan x = 920/5

arctan[tan x ] = arctan(920/5)

x = 89.69°

Yes?