SOLUTION: help please. Solve: 2sin^2(theta) - 5sin(theta) +3 = 0 on [0,2pi] I am not sure on this as I get -1 and -3/2 Thanks for any help.

SOLUTION: help please. Solve: 2sin^2(theta) - 5sin(theta) +3 = 0 on [0,2pi] I am not sure on this as I get -1 and -3/2 Thanks for any help.

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Question 1090232: help please.
Solve:
2sin^2(theta) - 5sin(theta) +3 = 0 on [0,2pi]
I am not sure on this as I get -1 and -3/2
Thanks for any help.
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
Close, but your signs are off and you need to back-substitute.

Then,

So,

and

Now back-substitute,

and

No theta solution since
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.

.
.
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