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balu736 [363]
3 years ago
9

If (-10,8) is a point on the terminal side f a angle 0 in standard position what is the value of tan0?

Mathematics
1 answer:
fiasKO [112]3 years ago
5 0

Answer:

The value of the tangent is -\frac{4}{5}.

Step-by-step explanation:

Let be A(x,y) = (-10, 8) on the terminal side of an angle in standard position and let be O(x,y) the origin of the angle and the origin of the Cartesian plane. By definition of tangent, we make use of the following expression:

\tan \theta = \frac{y_{A}-y_{O}}{x_{A}-x_{O}} (1)

Where:

x_{A}, x_{O} - x-Coordinates of point A and point O.

y_{A}, y_{O} - y-Coordinates of point A and point O.

If we know that x_{A} = -10, x_{O} = 0, y_{A} = 8 and y_{O} = 0, then the value of the tangent is:

\tan \theta = \frac{y_{A}-y_{O}}{x_{A}-x_{O}}

\tan \theta = \frac{8-0}{-10-0}

\tan \theta = -\frac{4}{5}

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