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Double-angle identities: Problem type 2 Simplify the expression by using a double-angle formula. 2 tan 40 2 1-tan 40 E sin JT COS 0

Double-angle identities: Problem type 2 Simplify the expression by using a double-angle formula. 2 tan 40 2 1-tan 40 E sin JT COS 0 tan cot sec CSC e

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