Consider the following unit Circle -By the definition of the sine function, sin(Ø)= x, -x, y, or -y? -The y coordinate of the point on the unit circle that intersects the terminal ray of π-Ø is: x, -x, y, -y? -Therefore, sin (π - Ø )= sin, -sin, cos, or -cos? -This means that the sine function is symmetric about the: x-axis, y-axis, or origin?

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