SOLUTION: Find the exact value of the following without calculators: Sin^2 225degrees-cos^2 300 degrees

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Question 1090932: Find the exact value of the following without calculators:
Sin^2 225degrees-cos^2 300 degrees
Answer by ikleyn(52786)   (Show Source): You can put this solution on YOUR website!
.
sin(225°) = .  Hence,  sin^(225°) = .

cos(300°) = .   Hence,  cos^2(300°) = .


Continue from this point.


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