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Double angle identities Simplify the expression by using a double angle formula 2 cos 20...

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Double angle identities Simplify the expression by using a double angle formula 2 cos 20 1 0 sin cot e J cos sec tan CSC

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Double angle identities Simplify the expression by using a double angle formula 2 cos 20 1 0 sin cot e J cos sec tan CSC

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