samanthagreen samanthagreen

12-02-2018
Mathematics

contestada

Radius of circle O has a slope of 2.5. What is the slope of the tangent line to circle O through point A?

0.8

2.5

-0.4

-5

Respuesta :

sqdancefan sqdancefan

15-02-2018

The tangent line is perpendicular to the radius, so will have slope
.. -1/2.5 = -0.4 . . . . . . corresponding to the 3rd selection

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