Question

EXPLAIN how to use the unit circle to find theta when cos theta equals negative sin theta, 0 ≤ theta ≤ 2π
*Must show work*

Answer 1

Answer:

The cosine is the length of the adjacent side (which is the x-coordinate) divided by the length of the hypotenuse (which is 1). So the cosine is just the x-coordinate! Similarly, the sine is the length of the opposite side (which is the length of the y-coordinate) divided by the length of the hypotenuse (which is 1).

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

Once we can find the sine, cosine and tangent of any angle, we can use a table of values to plot the graphs of the functions y = sin x, y = cos x ... Since each angle θ determines a point P on the unit circle, we will define.