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Play with the point on the unit circle to see how cosine and secant change together. Notice how when cosine is small, secant is big, and vice versa. It turns out they always multiply to exactly 1 ‍ .

Look up AND understand all your favorite trig identities

Play with the point on the unit circle to see how cosine and secant change together. Notice how when cosine is small, secant is big, and vice versa. It turns out they always multiply to exactly 1 ‍ .

The simplified explanation is that you would graph the triangle in a unit circle (a circle with radius 1). One point of the triangle should be at the center of the circle, while the other should be …

Learn how to use the unit circle to define sine, cosine, and tangent for all real numbers.

If you wanted to draw the unit circle around them, you know that the radius of the unit circle = the hypotenuse of the triangle = 1, so the vertex of the triangle that does NOT lie on the x-axis is …

Using the unit circle to define the sine, cosine, and tangent functions If you're seeing this message, it means we're having trouble loading external resources on our website. If you're …

Test your understanding of {unit name}. Skip to main content If you're seeing this message, it means we're having trouble loading external resources on our website.

Voiceover:So we have depicted here is a unit circle centered at point A and the point B lies on the circle. And then we dropped a perpendicular from point B to point D, point D lies on the …