SOLUTION: Hi :o) I hope you guys can help me with this. I think I now understand how to work out a resultant vector using the coordinate system, but this question has stumped me a little. I

Question 253576: Hi :o)
I hope you guys can help me with this. I think I now understand how to work out a resultant vector using the coordinate system, but this question has stumped me a little. I can't get a picture of it - it seems to be 3D, is that right?
Please help...
A mine shaft goes due west 75 m from the opening at an angle of 25� below
the horizontal surface. It then becomes horizontal and turns 30� north of west
and continues for another 45 m. What is the displacement of the end of the
tunnel from the opening.
Thanks SOOOOO much :o) (Happy New Year)
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
A mine shaft goes due west 75 m from the opening at an angle of 25� below
the horizontal surface. It then becomes horizontal and turns 30� north of west
and continues for another 45 m. What is the displacement of the end of the
tunnel from the opening.
-------------
If you know how to graph in 3D,
the start point is (0,0,0)
the turning point is (-75cos(25), 0 ,-75sin(25))
the final position is (-75cos(25) ,-45,-75sin(25))
-------------------------------
Distance from start to finish:
d = sqrt((75cos(25))^2 + (45)^2 + (75sin(25))^2)
d = sqrt(5526.47+2025+98.53)
d = 87.46 meters
==========================
Cheers,
Stan H.
RELATED QUESTIONS
Hi Guys hoping you can help!!! Change the subject of the following equation from V to... (answered by jim_thompson5910)

Hi! Can you please help me with this problem? It's pretty simple, from what I can tell,... (answered by rothauserc)

Hi guys, i was wondering if someone could help me with the following question. I cant... (answered by LOL MASTER)

can you tell me using this function 4x/x-2 what is the horizontal asymptote? and can you... (answered by richwmiller)

Hi guys, hope you can help me with this problem. I tried to figure it out by myself but I (answered by checkley71)

Hi. I'm very confused In how to get the answer to this problem: t-3+2(t+2) I tried to... (answered by ankor@dixie-net.com)

How do you work this out. Hope you can help. Question. A car is travelling at 60mph and (answered by Tatiana_Stebko)

You have borrowed $200000 at 7% p.a taken over 25 years a)How much is the standard... (answered by xcentaur)

Solve algebraically 3/4=1-3x-2 over x + 1; I also tried several times to type this in... (answered by sudhanshu_kmr)