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rad = square root sign

2rad3 sin (4x) = 3

2007-08-08 04:00:07 · 11 answers · asked by mickey 2 in Science & Mathematics Mathematics

11 answers

2root3.sin(4x) =3

sin(4x) = 3/(2root3)

4x=arcsin(3/(2root3))

x = (1/4)arcsin(3/(2root3))

dont have a calculator so check this but i think arcsin(3/(2root3)) =pi/3.

so x=1/4 x pi/3
so x = pi/12

2007-08-08 04:08:39 · answer #1 · answered by Anonymous · 0 0

Here is what you need to do. First, divide both sides by 2, then you will have rad(3sin(4x))=3/2. Then square both sides, this gives you 3sin(4x)=9/4. Then divide both sides by 3, this gives you sin(4x)=3/4. Then do inverse sin to both sides (you can use your calculator), this gives you 4x=48.59. Then divide both sides by 4, and x=12.148 and you are done!

2007-08-08 11:08:10 · answer #2 · answered by jkr17 2 · 0 0

2√[3 sin (4x)] = 3
Multiply both sides by ½
√[3 sin (4x)] = 3/2

square both sides
3 sin(4x)= 9/4

Multiply both sides by 1/3
Sin(4x)= 3/4

4x = arcsine[3/4] Use a spreadsheet function or a calculator to figure that out… or look it up in a table.

You now have 4x=someting... multiply boty sides by1/4 to get x

2007-08-08 11:27:15 · answer #3 · answered by gugliamo00 7 · 0 0

square both sides
4 (3 sin(4x) ) =9
3 sin(4x)=9/4
sin(4x)=9/12=3/4
4x = arcsin(3/4)
x= arcsin(3/4) / 4

2007-08-08 11:04:54 · answer #4 · answered by cidyah 7 · 0 0

the answer is 4 rad

2007-08-08 11:02:22 · answer #5 · answered by Anonymous · 0 1

x = 15

2 sqrt 3 sin (60) = 3

4x = 60
x = 15

2007-08-08 11:03:54 · answer #6 · answered by Doctor Q 6 · 0 1

I will assume you are solving for x.
sin(4*x) = 3/(2*sqrt(3))
sin(4*x) = sqrt(3)/2
x = (1/4)*arcsin(sqrt(3)/2)
but arcsin(sqrt(3)/2) = Pi/3
so x = (1/4)*Pi/3
x = Pi/12

2007-08-08 11:04:27 · answer #7 · answered by Not Eddie Money 3 · 0 1

sin(4x) = 3/(2rad3)

take arcsin (or sin^-1):

4x = sin^-1(3/2rad3)

x = [sin^-1(3/2rad3)]/4

(which is the exact answer --- sorry do not have a calculator)

2007-08-08 11:04:09 · answer #8 · answered by miggitymaggz 5 · 0 1

sin4x=sqrt(3)/2

4x=60
x=15

4x=120
x=30

2007-08-08 11:10:09 · answer #9 · answered by iyiogrenci 6 · 0 0

omg i hate socatoa. sorry i suk at these and i dont remember how to do them

2007-08-08 11:04:27 · answer #10 · answered by chacolatepuddin 3 · 0 0

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