Checking and securing understanding of trigonometric ratios
Lesson 6 / 11
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I can appreciate the range of values of the trigonometric functions.
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The unit circle is a circle with a radius of one
The unit circle is centered on the origin
The sine of an angle is the y-coordinate of the point where the radius has been rotated through that angle
The cosine of an angle is the x-coordinate of the point where the radius has been rotated through that angle
The tangent of an angle is the length of the side opposite the angle along the tangent at x = 1 to the unit circle
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