Question

Help please. The length of the shadow of a building is 100 meters as shown below.

What is the height of the building?

50 m
100 m
200 m
55 m

Answer 1

i think that the way you will figure this problem out, is by using trigonometric functions.

Answer 2

can you please explain to me how to do this please?

Answer 3

umm ok im not 100% sure but ill try
let me draw this.

Answer 4

okay thanks

Answer 5

so i think u will either have to use sin, cos or tan. let me check to see

Answer 6

wait......there is no angle.

Answer 7

ok there is a 45 degree angle i see.

Answer 8

yea

Answer 9

ok you will use the cos (cosine) function

Answer 10

f(x) = a*cos(bx + c) + d that?

Answer 11

\[\cos 45 = \frac{ 100 }{ x }\]

Answer 12

How do i solve it?

Answer 13

wait i might be wrong.

Answer 14

answer choices
50 m
100 m
200 m
55 m
I think its B

Answer 15

i mean D

Answer 16

it may be 200m

Answer 17

but wait let me check

Answer 18

how did you get 200

Answer 19

i didnt lol wait i have to try to figure it out. this problem is still unsolved at this second.

Answer 20

lol okay im trying it too

Answer 21

it is 100

Answer 22

one sec

Answer 23

how did you get 100 an you please show the steps you did?

Answer 24

give me 5 minutes and i will get you an explanation.

Answer 25

okay thank you.

Answer 26

i dont know. someone else will clarify. just wait here ill try to find someone.

Answer 27

okay

Answer 28

are you talking calculus 1?

Answer 29

no Geometry

Answer 30

oh ok

Answer 31

im checking my text book

Answer 32

okau if i go offline its not my fault my laptop has a virus and it tends to turn on and off by itself

Answer 33

ok i think i may have some clarification

Answer 34

okay lol

Answer 35

ok i think the correct method is the tan method. I will draw this out and lets see what we get.