Please help me Astrophysics!!!! :"D

- YumYum247

Please help me Astrophysics!!!! :"D

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- YumYum247

##### 1 Attachment

- YumYum247

@sweetburger Please help me!!!! :)

- YumYum247

Can anyone please help me find the resultant angle?!?!?!?

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## More answers

- YumYum247

@MAEMAEHOCKEY final got your tagname :D

- anonymous

give me a couple of mins

- YumYum247

np, take your time :)

- anonymous

i thought it would be simple

- YumYum247

and i thought ......nvm. i'll just beg at someone's else's door. -_-

- anonymous

i willl help u i am happy to

- YumYum247

really?????? :D

- anonymous

yaaa

- YumYum247

yuss!!!

- anonymous

ok i think i got it

- YumYum247

Hey don't bother, i don't wanna make you go through stress just for a question...leave it, i'll just ask someone else...Chill...:"D

- anonymous

what .......i am not stressed

- YumYum247

i'm just saying if your here to be a chill bird, then be a chill bird, i ain't trapping you in a cage. :"D

- anonymous

i am not

- YumYum247

Aait then.... i just wanna let you know that i've already done 90% of the question, i just need to find the resultant angle. and Thanks!!!

- anonymous

ok i think i got it if i am doing it right

- YumYum247

please proceed....:D

- anonymous

24 right ???

- mathmate

|dw:1442883489245:dw|

- mathmate

can you confirm if the 24 and 32 degrees as shown in the marked up diagram?
|dw:1442883620661:dw|

- YumYum247

hold up let me attach a picture of the actual question....don't go anywhere...promise me!!! O_O

- mathmate

ok!

- YumYum247

##### 1 Attachment

- mathmate

|dw:1442883835366:dw|
Yes, this is a little better, with the force magnitudes.
One suggestion I make for your future solutions is to draw the forces in the same orientation as the original. This way, there is a lesser chance of making mistakes.

- YumYum247

ok :)

- mathmate

|dw:1442883951868:dw|
So R^2=15^2+12^2-2(15)(12)cos(124)=23.8812 as you had it.

- mathmate

|dw:1442884257124:dw|
sin(\(\theta\)/12=sin(124)/R
so
sin(\(\theta\)=12 sin(124)/23.8812=0.416582
\(\theta\)= asin(0.416582)=24.619 degrees (measured from the 15N force,
or
24.619-24=0.619 degrees from the axis of the direction of the vehicle.

- mathmate

correction: a little confusion for R.
Should have written R^2=......., and R=sqrt(...)=23.8812 N

- mathmate

@YumYum247
Still there?
To find the angle, I used the sine rule, but forgot to indicate it.

- YumYum247

yes i'm still here....!!!

- YumYum247

0.61deg.....but that's not even a one whole degree tho :O

- YumYum247

so you used...
SineA/a = SineC/c
SinA/15 = Sin124/24

- mathmate

That's with respect to the axis of the vehicle.
|dw:1442885722739:dw|

- mathmate

Yes, but sin(theta)/12 = sin(124)/R.
Sine rule sometimes does not give the correct angles when the unknown angle is near 90 degrees (angle or supplement).
But here we know the unknown angle is acute, so there's no problem.

- YumYum247

yah sorry i realized that.... :D

- YumYum247

Again thank you infinite :"D

- mathmate

You're welcome! :)

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