From the top of a tower, the angle of depression to the bottom of a pillar on the same surface of height 20m is 60° If the a angle of depsession from the top of the . pillar to the bottom of the lower is 22. find the height of the tower. ( Ton 220 - 0,4)

Let AB=height of the building=100m

DE=AC=AB+BC=h= height of the tower

∠ADC=60

∘∠BDC=60 ∘

Now

tan30 ∘ = CDCB

= dx

31 = dx

(1)tan60 ∘ = CDCA

= dx+100

3 = dx+100

(2)From (1)d= 3

x (3)Substituting (3) in (2)

3 = 3 x(x+100)

3x=x+100

2x=100

x=50

Height of the tower=DE=h=AB+CB=100m+x=100m+50m=150m

refer to the attachment...

I hope it will make you :)

when rotating a figure 180 degrees, imagine that you are able to take the figure and turn it clockwise or counterclockwise around a center point. to rotate a figure 180 degrees, you will need to apply the rule (x, y) → (-x, -y). start by using a coordinate grid with coordinates for each vertex of the figure. the center point of the coordinate grid is located at (0, 0), which is what you will rotate the figure around. write down the original coordinates of the shape you are going to rotate. then, apply the rule. for example, coordinate (1, 2) becomes (-1, -2). another example would be, coordinate (-4, -2) becoming (4, 2). after you change each original coordinate to the rotated coordinate, you will draw your new figure.

step-by-step explanation:

im pretty sure its

(8,15)

step-by-step explanation: