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Page 3 of 5 Prove the identity. 12. (sint -cost) =1-sin (2t) 13. (sin x-1 = cos(2x) + sin* x 15. tan (2x) = 2

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Page 3 of 5 Prove the identity. 12. (sint -cost) =1-sin (2t) 13. (sin x-1 = cos(2x) + sin* x 15. tan (2x) = 2 sin (x) cos (x) 14. sin (2x)= 2 tan (x) 1 + tan (x) 2cos (x) -1 17. sin (20) 16. cot (x) - tan (x) =2cot(2x) tan (0) 1+ cos (20) 18. sin (3x) =3sin (x) cos (x) -sin'(x) prison Home End PgUp CO F3 3 4 5 7 R Y U P

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