SOLUTION: I also need help on this trig. identity as well.
sin^2 - 1 = -cos^2
Once again thanks! Oh and we are only allowed to change one side of the identity.
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Question 282266: I also need help on this trig. identity as well.
sin^2 - 1 = -cos^2
Once again thanks! Oh and we are only allowed to change one side of the identity.
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
 - 1 = -\cos^2(x))
... Start with the given equation.
 = -\cos^2(x))
... Rearrange the terms on the left side.
) = -\cos^2(x))
... Factor out a -1 from the left side.
 = -\cos^2(x))
... Use the identity  = \cos^2(x))
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