MATHS
posted by CATHERINE .
SIMPLIFY SIN RAISE TO POWER 4 MINUS COS RAISE TO POWER4 DIVIDED BY 1 MINUS 2SIN RAISE TO POWER 2

MATHS 
Steve
ever heard of math notation?
(sin^4xcos^4x)/(1sin^2x)
= (sin^2x+cos^2x)(sin^2xcos^2x)/cos^2x
= tan^2x1
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