If the height of the building is 100 feet and the sun makes a 50 degree angle with the ground as shown in the image below, what is the distance from the top of the building to the tip of the shadow?

Question

anonymous · Answer

attachment

zzr0ck3r · Answer

sin(40)/x=sin(50)/100
x=100*sin(40)/sin(50)

anonymous · Answer

meaning...?

zzr0ck3r · Answer

plug that into a calc
x = 83.9

zzr0ck3r · Answer

do you know about cos(x) and sin(x) yet?

anonymous · Answer

kind of not rlly.

zzr0ck3r · Answer

what I used was law of sines, google it, its a pretty nice solver for these

anonymous · Answer

@zzr0ck3r what did you plug the x into?

zzr0ck3r · Answer

?

zzr0ck3r · Answer

this question is a year old btw

anonymous · Answer

yah, but i have the same question.

anonymous · Answer

i understand all that you did, but when you say plug it into a calc, you are not specific

zzr0ck3r · Answer

im saying 
put this in a calculator
100*sin(40)/sin(50)

anonymous · Answer

and then you got x=83.9

zzr0ck3r · Answer

correct

anonymous · Answer

but that not one of my available options

anonymous · Answer

75.4 feet
		
130.5 feet
		
76.6 feet
		
331.3 feet

zzr0ck3r · Answer

ahh typo that should say sin(90) not 40

zzr0ck3r · Answer

100*sin(90)/sin(50)

zzr0ck3r · Answer

=130.5

zzr0ck3r · Answer

well you should have caught that if you understood. do you see what im talking about?