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MAVERICK [17]
3 years ago
14

Use the unit circle to find the value of tan (-180°).

Mathematics
1 answer:
loris [4]3 years ago
8 0

In order to evaluate the tangent function "visually", you have to draw a vertical line tangent to the circle (i.e. the line x=1), and extend the radius until it meets that line.

Since the angle -180° makes you land on point (-1,0), if you extend the radius you'll meet the vertical line at point (1,0).

The tangent is the y-value of this point, and thus it's zero.

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