SOLUTION: Find all solutions in [0,2pi] where sin^2(t)-cos^2(t)=0
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Question 762218: Find all solutions in [0,2pi] where sin^2(t)-cos^2(t)=0
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!
\ -\ \cos^2(t)\ =\ 0)
Substitute from the Pythagorean Identity:
\ -\ \cos^2(t)\ =\ 0)
Simplify
\ =\ \frac{1}{2})
Take the root
\ =\ \pm\frac{\sqrt{2}}{2})
Then all you have to do is find the four angles in 
where the cosine of the angle is either 
.
John
Egw to Beta kai to Sigma
My calculator said it, I believe it, that settles it
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