Abbilliewiesmomyka
Abbilliewiesmomyka Abbilliewiesmomyka
  • 10-06-2016
  • Mathematics
contestada

We did not recieve a diagram for this question.

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

A)0.8
B)2.5
C)-0.4
D)-5

Respuesta :

HomertheGenius
HomertheGenius HomertheGenius
  • 10-06-2016
If the line is tangent to circle at point A and the radius ( suppose AO) has a slope of 2.5 then a slope of the tangent line is :
[tex] \frac{-1}{2.5}= -0.4 [/tex]
Explanation: The product of slopes of two perpendicular lines is -1. To get second slope we have to divide -1 by the first one.
Answer:C) - 0.4
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