SOLUTION: How do I rewrite the function value in terms of cofunction for sin(-pi/4)

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Question 858153: How do I rewrite the function value in terms of cofunction for sin(-pi/4)
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
rewrite the function value in terms of cofunction for sin(-pi/4)
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Form: sin(x) = cos((pi/2)-x)
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Your Problem
sin(-pi/4) = cos((pi/2)+(pi/4)) = cos((2pi/4)-(pi/4)) = cos(pi/4)
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Cheers,
Stan H.
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