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Math · Trigonometry
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18 Simplily each expression. 1-sine (a)sin () 1+ sina cos2 e-1 cosa 19. Match each of the following functions to their appropriate graph. (e) H(r) = I(z-3)2-3 (a) F(r)--2r2 +3 (b) G(r)-2r +3 (d) J(r)-+3+3 IV Il 20. Sketch the graph of 仁;! for r s -2 for -2<I<1 for r 21 -(r-1+2for 2 I

21. Match each of the following functions to their appropriate graph. (a) (b) = 2 sin(x) sin(2r) (c) is sin(x)-r (d) y-sin(z-r) 22. Which function has the correct shape and direction for the graph of

You don't have to answer everything. I just want to be sure that my answers and steps are correct, but could you help me with number 21

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