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anonymous
 one year ago
Find all solutions to the equation.
7 sin2x  14 sin x + 2 = 5
Can someone walk me through this?
The online notes are little help.
anonymous
 one year ago
Find all solutions to the equation. 7 sin2x  14 sin x + 2 = 5 Can someone walk me through this? The online notes are little help.

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Astrophysics
 one year ago
Best ResponseYou've already chosen the best response.2You can set it up as \[sinx = x\] then you have \[7x^214x+2 = 5\] or you can just use sinx, but this may seem easier to you so you can plug in sinx afterwards for x. You'll have to use difference of squares.

marihelenh
 one year ago
Best ResponseYou've already chosen the best response.0First, add the 5 to both side to get a 0 on the right side.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Then I just solve for x?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Okay thanks. I didn't realize it was that simple.

marihelenh
 one year ago
Best ResponseYou've already chosen the best response.0You can factor out a seven and then factor for the rest.

Astrophysics
 one year ago
Best ResponseYou've already chosen the best response.2Yeah, and you'll have to plug sinx back as x to find the solution

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0So you'd finally come to 7(x+1)(x1) then what do you do?
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