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In the previous lesson, we saw that (cosθ,sinθ) are the coordinates of a point on the unit circle whose angle to the x-axis is θ:
If we trace the values of sinθ and cosθ with θ on the x-axis, we find their sinusoidal graphs:
In the previous lesson, we saw that (cosθ,sinθ) are the coordinates of a point on the unit circle whose angle to the x-axis is θ:
If we trace the values of sinθ and cosθ with θ on the x-axis, we find their sinusoidal graphs: