I have a simple trig equation that is:

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

and this is what i did

2sin^(2)x-1 = 0

2sin^(2)x = 1

sin^(2)x = 0.5

how would you continue? would you square both sides or is there a different way to do it because of the trig?

I have a simple trig equation that is:

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

and this is what i did

2sin^(2)x-1 = 0

2sin^(2)x = 1

sin^(2)x = 0.5

how would you continue? would you square both sides or is there a different way to do it because of the trig?

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

and this is what i did

2sin^(2)x-1 = 0

2sin^(2)x = 1

sin^(2)x = 0.5

how would you continue? would you square both sides or is there a different way to do it because of the trig?

- maggiemagnet
**Posts:**355**Joined:**Mon Dec 08, 2008 12:32 am-
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adamwer wrote:I have a simple trig equation that is:

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

and this is what i did

2sin^(2)x-1 = 0

2sin^(2)x = 1

sin^(2)x = 0.5

how would you continue? would you square both sides or is there a different way to do it because of the trig?

Since the sine is already squared, I don't think you'd want to square again. Maybe you could take the square root? (Remember to do the "+/-" in front of the root!)