SOLUTION: simplify the expression
sin^2X-1/cos(-x)
Algebra.Com
Question 766932: simplify the expression
sin^2X-1/cos(-x)
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
simplify the expression
[sin^2(X)-1]/cos(-x)
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Snce sin^2+cos^2 = 1
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= -cos^2(x)/cos(x)
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= -cos(x)
===============
Cheers,
Stan H.
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