Use the unit circle to find the exact trigonometric function cos 330 degrees

Given: and prove: what is the missing reason in the proof? given transitive property alternate interior angles theorem converse alternate interior angles theorem

The vertex of this parabola is at (-2,-3). when the x-value is -1, the y-value is -5. what is the coefficient of the squared expression in the parabola's equation?

What unit of been sure would be appropriate for the volume of a sphere with a radius of 2 meters