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UNIT CIRCLE

Across
The reciprocal of the sine of an angle
The ratio (adjacent/hypotenuse)
An angle with terminal side on the x-axis or y-axis. 0° 90° 180° 270° 360°
The common endpoint of two or more rays or line segments.
The reciprocal of the tangent of an angle
Down
The ratio (opposite/hypotenuse)
radius * subtended angle (rarians)
Each of four quarters of a circle.
The ratio (opposite/adjacent)
The reciprocal of the cosine of an angle