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Mathematics 6 Online
OpenStudy (anonymous):

Solve for x. Round to nearest tenth.

OpenStudy (anonymous):

OpenStudy (anonymous):

OpenStudy (anonymous):

I have to solve for both of them using the same "Solve for x. Round to nearest tenth."

OpenStudy (sidsiddhartha):

use sin35=x/20 and cos62=50/x

OpenStudy (anonymous):

How does that work?

OpenStudy (anonymous):

I need a little more information I do not completely understand the concept of sin or cos or how working them out would work

OpenStudy (sidsiddhartha):

sina=perpendicular distence/length of hypotenuse cosa=lenght of base/length of hypotenuse

OpenStudy (anonymous):

That will give me the answer to the two questions? sina for the first and cosa for the second?

OpenStudy (anonymous):

sin35 = -0.428?

OpenStudy (anonymous):

cos62 = 0.673?

OpenStudy (sidsiddhartha):

sin35=0.5735 and cos62=0.469

OpenStudy (anonymous):

How did you get those because I entered them into the calculator and got different answer

OpenStudy (anonymous):

I put cos62 then pushed = and it came up with .673

OpenStudy (sidsiddhartha):

check the mode it's in radian calculate them in degree

OpenStudy (anonymous):

switched it over and got the correct answer okay so where do I go now that I got the .573 and the .469?

OpenStudy (sidsiddhartha):

yes now plug them on above equations and solve for x

OpenStudy (anonymous):

plug them into what equation?

hartnn (hartnn):

these equations sin35=x/20 and cos62=50/x know how to get them ?

OpenStudy (anonymous):

Yes I just got them on the calculator Sin35 = .573 Cos62 = .469 but now what do I do with those numbers?

hartnn (hartnn):

sin 35 = x/20 0.573 = x/20 x= 0.573 * 20 = ... like this

hartnn (hartnn):

but the important point is whether you can get those equations on your own

OpenStudy (anonymous):

oh okay thank you! and that is the answer for X perfect!

OpenStudy (anonymous):

I did get them on my own, I got them wrong at first because the calculator was on RAD and not DEG but I changed it over and got the correct numbers

hartnn (hartnn):

i wasn't talking about the values, i was talking about the equation sin 35 = x/20 you could get this on your own ?

OpenStudy (anonymous):

yeah ... .573 * 20 = 11.46

hartnn (hartnn):

|dw:1399111834623:dw| \(\huge \cos \theta =\dfrac{adjacent ~side }{hypotenuse} = \dfrac{a}{c} \) \(\huge \sin \theta =\dfrac{opposite ~side }{hypotenuse} = \dfrac{b}{c} \)

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