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(1+cosx)(1-cosx)= 1 +cosx - cosx -cos^2x (where ^2 means squared)

= 1-cos^2x = sin^2x (sin squared x)

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Sheldon Lynch

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2y ago

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Q: What is (1 cos x)(1- cos x)?
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How do you solve sinx divided by 1 plus cosx plus cosx divided by sinx?

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How do you solve x2 equals cos x?

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