Equation of the Tangent Line to a Circle
1. Give the equation of the circle. Then find the equations of the vertical and horizontal
tangent lines to the cirle graphed below.
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2. Find the equations of the horizontal and vertical tangents to the circle given by
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For all "slanted" tangents follow these steps:
• sketch
• find slope of radius
• find slope of tangent line
• use y = mx + b to find the equation of the tangent line
3. Find the equation of the tangent to
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at (4,-5).
For all "slanted" tangents follow these steps:
• sketch
• find slope of radius
• find slope of tangent line
• use y = mx + b to find the equation of the tangent line
4. Find the equation of the tangent to
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at (2,-1).