Question: Prove the identity, Manipulate the left side to equal the right side. 19. (sint-cost) =1-sin (2t) (Sint-Cost) (Sint-cost) 21. cosx-sin x= cos(2x) 23. cos

Prove the identity, Manipulate the left side to equal the right side. 19. (sint-cost) =1-sin (2t) (Sint-Cost) (Sint-cost) 21. cosx-sin x= cos(2x) 23. cos (0-) + cos (0) = 1 20. (sin x-1)= cos(2x)+sin* x 22. sin (20) 1+cos (20) -=tan (0) 24. sin (8) tan (0) = sin(0)

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