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anonymous
 one year ago
Find all solutions to the equation.
7 sin2x  14 sin x + 2 = 5
anonymous
 one year ago
Find all solutions to the equation. 7 sin2x  14 sin x + 2 = 5

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Nnesha
 one year ago
Best ResponseYou've already chosen the best response.0set it equal to zero then you will get quadratic equation

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Yeah I noticed that but can you show me how you to set it up

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.0\[\huge\rm 7\sin^2x14sinx+2+5=0\] add 5 both

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.0to make it easy let sin(x) x \[\huge\rm 7x^2 14x+2+5 =0\] dw:1437508829146:dw solve for x :)

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.0let me know what you get

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Yeah just give me a min I need to solve another problem real quick

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.0equal to zero 0 then take out common factor

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.0opps sorry i didn't get notification

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.0and yes that's right now factor this quadratic equation x^2 2x +1

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.0yes right now set these equal to zero \[\huge\rm 7 \cancel= 0 ~~~(x1)=0~~~(x1)=0\] solve for x

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0what about the sines though?

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.0yes now change x with sin

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.0remember we changed sin(x) with x right ?

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.0so \[\huge\rm sinx =1 \]

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.0now use unit circle to find solution

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0find where one is 1 is y on the unit circle?

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.0(cos , sin) x coordinate represent cos function and y coordinate represent sin function

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0thats it, thats the only solution

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0oh okay thank you so much!

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.0my pleasure but remember sinx = 1 multiplicity of 2

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I'm gonna post another question can you help me with that one as well, I think i know the answer just confused how to get to the answer

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so my answer would be sinx=1^2?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so just to confirm, my answer box would read sinx=1
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