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Prove the trigonometric identities. Show work for each problem. 1. (tan20) (csc20) 2. seco-sinotane sin x + cos x 3. COST X sec x -1

Prove the trigonometric identities. Show work for each problem.

1. (tan20) (csc20) 2. seco-sinotane sin x + cos x 3. COST X sec x -1 4. sec x 5. sec20-tan20+cot20 sec x 6. sec x - 1 7. tanocoto-cos20

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