On which of the following intervals is the function f(x) = 4 cos(2x − π) decreasing?

x = pi over 2 to x = π

x = 0 to x = pi over 2

x = pi over 2 to x = 3 pi over 2

x = π to x = 3 pi over 2

Question

On which of the following intervals is the function f(x) = 4 cos(2x − π) decreasing?

 x = pi over 2 to x = π

 x = 0 to x = pi over 2

 x = pi over 2 to x = 3 pi over 2

 x = π to x = 3 pi over 2

anonymous · Answer

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anonymous · Answer

For an angle Θ with the point (16, −30) on its terminating side, what is the value of cosine?

 16

 −30

 negative 15 over 17

 8 over 17