Question

Find all solutions to the equation.

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

Answer 1

Please someone help!

Answer 2

i cant put a screen shot but it looks like this

Answer 3

@ Mathstudent123

Answer 4

solve it like a quadratic

Answer 5

This is a quadratic equation in sin(x).

If that is confusing just temporarily make the substitution sin(x) = t

Solve the quadratic equation in t.

Then put back t = sin(x) and solve for x.

Answer 6

factor out a 7
let t = sin x

--> t^2 -2t +1 = 0

Answer 7

so 7+14(t)(x)+2=-5

Answer 8

or 7T^2(x)-14T(x)+2=-5?

Answer 9

the 2nd one...but move the -5 over and factor out a 7