Question

please help!

If sin2 x - 2sinx = 1, then sinx = _____.


-1 ±sqroot 2
1 ±sqroot 2 << am i correct??
± sqroot 2
1

Answer 1

1. Subtract 1 from both sides
2. Plug into the quadratic formula
3. a = 1, b = -2, c = -1

Answer 2

it would be 2+sqroot8/2 & 2-sqroot8/2 right??

Answer 3

yesb ut sqroot 8 = 2sqroot2 so you can divide everything by 2

Answer 4

then it would just be ± sqroot 2 correct?

Answer 5

or just 1?

Answer 6

???

Answer 7

1+-sqroot2