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.

Algebra ->  Trigonometry-basics -> 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.      Log On


   

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) About Me  (Show Source):
You can put this solution on YOUR website!
... Start with the given equation.


... Rearrange the terms on the left side.


... Factor out a -1 from the left side.


... Use the identity