Ammarah

Determine whether AB is tangent to C. Explain ur reasoning..

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Ammarah

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|dw:1361850986588:dw|

Ammarah

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@Mertsj

Mertsj

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It doesn't even look like AB is a tangent in your picture.

Ammarah

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oops i drew it wrong

Ammarah

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|dw:1361851236697:dw|

Ammarah

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its labeled the same way above..

Mertsj

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|dw:1361851252740:dw|

Mertsj

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Like that?

Ammarah

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yeah

Mertsj

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Ok. We know that a radius is perpendicular to a tangent at the point of tangency. Sp we want to know if the radius CB is perpendicular to the proposed tangent AB. We can use the Pythagorean Theorem to find out if ABC is a right triangle. Is it?

Ammarah

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yes

Mertsj

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So then, CB is perpendicular to AB and CB is a radius so AB must be a tangent.

Ammarah

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ohhk i have a nother question can u please check it??

Ammarah

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|dw:1361852047516:dw|

Ammarah

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ANd my other Question is: |dw:1361852453452:dw|

Mertsj

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|dw:1361852705443:dw|

Mertsj

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|dw:1361852868718:dw|