Answered

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Find all the solutions to the equation.

7sin²x - 14sinx + 7 = 0

Sagot :

loneguy

[tex]7 \sin^2 x - 14 \sin x +7 = 0\\\\\implies 7 \sin^2 x - 7 \sin x - 7 \sin x +7 =0\\\\\implies 7 \sin x(\sin x -1) - 7( \sin x -1) =0\\\\\implies (\sin x -1)(7 \sin x -7) =0\\\\\implies \sin x = 1\\\\\implies x =\dfrac{\pi}2 + 2 \pi n\\[/tex]

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