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9 terms

math??

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1
sin^2+cos^2
1-cos^2
sin^2
1-sin^2
cos^2
csc^2
1+cot^2
sec^2
tan^2+1
-sin(t)
sin(-t)
cos(t)
cos(-t)
cos(t)
sin(pi/2-t)
sin(t)
cos(pi/2-t)