Question

solve sin^2 + sin x - 20 =0

Answer 1

I answered this already. sinx = -5 and sinx = 4.

Answer 2

not possible is it?

Answer 3

you can see this from the original equation
since sine is no greater than one and no less than -1, it is not possible for sine squared plus sine to equal minus twenty

Answer 4

so does that mean I can convert it to degrees

Answer 5

Right. Those are invalid values of a sine function. It can only go from -1 to +1.

Answer 6

thank you