You can put this solution on YOUR website! tan^2 315(degrees)-2cot240(degrees)= ?
How would I solve this without using a calculator?
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tan^2(-45) - 2cos^2(60)
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(-sqrt(2)/2)^2 - 2(1/2)^2
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= 2/4 - 2(1/4)
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= 1/2 - 1/2
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= 0
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Cheers,
Stan H.
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