A-Level Maths: E7-16 [Trig Equations: Solve 4sin^2(x) = sin(x) between 0 and 360 degrees]

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hi sir i dont under stand whey 180 degrees is a solution could you clarify please. I swear it doesn't cross 180

christyjane
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hello sir
if i do 360-166 i get 194, why is this solution not included here
Thank you for everything by the way

Masowe.
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SO then why cant we add 360 to 0 to get another solution?

JK-vmyo