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logynklode
 3 years ago
7 sin2x  14 sin x + 2 = 5
find all solutions
logynklode
 3 years ago
7 sin2x  14 sin x + 2 = 5 find all solutions

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logynklode
 3 years ago
Best ResponseYou've already chosen the best response.0thats not even english to me.

logynklode
 3 years ago
Best ResponseYou've already chosen the best response.07sin²(x)  14sin(x) + 2 = 5 7sin²(x)  14sin(x) + 7 = 0 7(sin²(x)  2sin(x) + 1) = 0 sin²(x)  2sin(x) + 1 = 0 (sin(x)  1)² = 0 sin(x)  1 = 0 sin(x) = 1 x = 90°

hartnn
 3 years ago
Best ResponseYou've already chosen the best response.0is it sin2x or \(sin^2 x\) ??

hartnn
 3 years ago
Best ResponseYou've already chosen the best response.0then sin x=1 is correct. but do u need solutions in the range of 0 to 180 only or all solutions ?

logynklode
 3 years ago
Best ResponseYou've already chosen the best response.0no idea. the question say find all solutions to the equation

hartnn
 3 years ago
Best ResponseYou've already chosen the best response.0because sin (360+90) also =1

hartnn
 3 years ago
Best ResponseYou've already chosen the best response.0yes, all solutions means u don't have only 1 solution, u have infinite

hartnn
 3 years ago
Best ResponseYou've already chosen the best response.0sin(x)=1 sin x = sin (90+360n) (n=1,2,3,....) so x= 90+360n are all the values of x with n=1,2,3,....`

logynklode
 3 years ago
Best ResponseYou've already chosen the best response.0yeah. is that the answer

logynklode
 3 years ago
Best ResponseYou've already chosen the best response.0you sure. i can wrrite that & ill be correct?

logynklode
 3 years ago
Best ResponseYou've already chosen the best response.0if i wrote exactly what you just put down ill be correct?

hartnn
 3 years ago
Best ResponseYou've already chosen the best response.0idk how your teacher / system demands the answer, but any of these 2 answers are complete and correct: 1) x= 90+360n , n=1,2,3,..... 2) x=90,450,810,..

hba
 3 years ago
Best ResponseYou've already chosen the best response.0Whats The Range ? I think It Would Be 0 to 180
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