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Determine resultant: 25N at 10degrees to the horizontal and 30N horizontally.
 2 years ago
 2 years ago
Determine resultant: 25N at 10degrees to the horizontal and 30N horizontally.
 2 years ago
 2 years ago

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NotTimBest ResponseYou've already chosen the best response.0
relatively simple. again, i ask for the angle only.
 2 years ago

experimentXBest ResponseYou've already chosen the best response.1
dw:1333522316234:dw
 2 years ago

experimentXBest ResponseYou've already chosen the best response.1
try using cosine law
 2 years ago

NotTimBest ResponseYou've already chosen the best response.0
but there are no angles hen (10 isnt' actual an angle within the triangle)
 2 years ago

experimentXBest ResponseYou've already chosen the best response.1
because 25 is applied 10 degree to horizontal ... and obviously, it makes 10 degree or 18010 degree with the horizontal
 2 years ago

NotTimBest ResponseYou've already chosen the best response.0
ok...but how do i apply 170 in this triangledw:1333533509958:dw
 2 years ago

NotTimBest ResponseYou've already chosen the best response.0
(im more familiar with that format)
 2 years ago

experimentXBest ResponseYou've already chosen the best response.1
dw:1333522738607:dw
 2 years ago

NotTimBest ResponseYou've already chosen the best response.0
dw:1333533595849:dwLike I understand how it applies outside, but how do i calculate the angle within?
 2 years ago

experimentXBest ResponseYou've already chosen the best response.1
30N is parallel to horizontal
 2 years ago

experimentXBest ResponseYou've already chosen the best response.1
dw:1333522901720:dw
 2 years ago

NotTimBest ResponseYou've already chosen the best response.0
oh. the z,c, f pattern. got it.
 2 years ago

NotTimBest ResponseYou've already chosen the best response.0
what's our next step then, cos law?
 2 years ago

experimentXBest ResponseYou've already chosen the best response.1
yep ... we have all parameters required to calculate
 2 years ago

dumbcowBest ResponseYou've already chosen the best response.2
dw:1333525849053:dw another way of looking at it
 2 years ago

dumbcowBest ResponseYou've already chosen the best response.2
\[x^{2} = 25^{2}+30^{2}2(25)(30)\cos 170\]
 2 years ago

NotTimBest ResponseYou've already chosen the best response.0
thank you! i hadnt thought of this
 2 years ago

NotTimBest ResponseYou've already chosen the best response.0
hey guys. I'm having problems figuring out the angle (again!)
 2 years ago

NotTimBest ResponseYou've already chosen the best response.0
I manged to get 5.4 degrees (the closest yet!), while the actual answer is 4.5 degrees.
 2 years ago

NotTimBest ResponseYou've already chosen the best response.0
i did so by using sin1(30sin170/54.8)
 2 years ago

CarnielBest ResponseYou've already chosen the best response.0
What they all said to you is correct
 2 years ago

NotTimBest ResponseYou've already chosen the best response.0
yeah, but i still got the wrong angle...
 2 years ago

CarnielBest ResponseYou've already chosen the best response.0
How so? Have you tried Tan,Cos, and Sin?
 2 years ago

NotTimBest ResponseYou've already chosen the best response.0
the trig ratios? it only applies to right angle triangles...doesnt it?
 2 years ago

NotTimBest ResponseYou've already chosen the best response.0
Sorry if I sound incredulous, but I really do think it applies only to right angle triangles.
 2 years ago

CarnielBest ResponseYou've already chosen the best response.0
Do you have notes? If soo check to make sure.
 2 years ago

NotTimBest ResponseYou've already chosen the best response.0
i dont have the notes specifically on that (its buried in a box somewhere); ill check the internet.
 2 years ago

NotTimBest ResponseYou've already chosen the best response.0
http://wiki.answers.com/Q/Can_trig_ratios_only_be_used_on_right_triangles http://library.thinkquest.org/20991/alg2/trig.html
 2 years ago

NotTimBest ResponseYou've already chosen the best response.0
but...i can't use it here...(unless i do component method, which im not allowed to)
 2 years ago

CarnielBest ResponseYou've already chosen the best response.0
Which methods do you recall :)?
 2 years ago

dumbcowBest ResponseYou've already chosen the best response.2
you need to use Law of Sines \[\frac{a}{\sin A}=\frac{b}{\sin B}=\frac{c}{\sin C}\]
 2 years ago

NotTimBest ResponseYou've already chosen the best response.0
yeah. i used that and got 5.4 degrees.
 2 years ago

NotTimBest ResponseYou've already chosen the best response.0
@dumbcow yeah. i used that and got 5.4 degrees.
 2 years ago

dumbcowBest ResponseYou've already chosen the best response.2
ok the 5.4 degrees is the angle inside the triangle, they want the angle of resultant vector > 10  5.45 = 4.55
 2 years ago
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