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Mathematics, 28.01.2020 15:47 starbae1084

Which of the following are equivalent to the function y = 4cos x - 2? check all that apply.
a. y = -4cos x + 2
b. y = 4sin(x +π/2 ) - 2
c. y = 4sin(x - π/2) - 2
d. y = 4cos(-x) - 2

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