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23-01-2020
Mathematics

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How would I find all the solutions to the equation "7sin^2x-14sinx+2=-5"?

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gochrismaccmm gochrismaccmm

23-01-2020

Answer:

Step-by-step explanation:

Find all solutions to the equation.

7 sin^2(x) - 14 sin x + 2 = -5

7sin^2(x)-14 sin x+7 =0

sin^2(x)-2sin x+1 =0

(sinx-1)(sinx-1)=0

sinx=1

x=π/2+2pi*k, k=integer

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