a roller coaster car moves 200 ft horizontally and then rises 135 ft at an angle 30 degs above the horizontal. it next travels 135 ft at an angle of 40 degs downward. what is it's displacement from the starting point?

Question

zzr0ck3r · Answer

200 + 135cos(PI/6) + 135cos(2*pi/9)

mimi_x3 · Answer

hm..how did you get that?

zzr0ck3r · Answer

took cosine and the angle with the mag of the distance of each leg.

lgbasallote · Answer

how are you guys getting these o.O

mimi_x3 · Answer

i don't think that it's that easy.
@lgbasallote: do you ahve the answer?

zzr0ck3r · Answer

why not?

lgbasallote · Answer

420 ft at -3 degs

zzr0ck3r · Answer

I think thats what I put.

zzr0ck3r · Answer

it rose and fell the same distance it does not matter what angle

lgbasallote · Answer

but how O.O

zzr0ck3r · Answer

but how what>?

lgbasallote · Answer

how did you get your that thingy

lgbasallote · Answer

200 + 135cos(PI/6) + 135cos(2*pi/9

zzr0ck3r · Answer

it went 300 ft then at some angle rose blah then at some angle went down blah, took all the cosines and added them up

zzr0ck3r · Answer

err 200 ft

zzr0ck3r · Answer

am I wrong? I think im missing something here

lgbasallote · Answer

would oyu mind explaining where you got your arguments?

lgbasallote · Answer

and also why it's cosine not any other function or something

zzr0ck3r · Answer

from a trig class? How can I explain it more than I took the cosine with the angle they were headed

lgbasallote · Answer

i'll try to draw a figure and tell me if it's right

lgbasallote · Answer

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