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Pearson Geometry Common Core, 2011

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Pearson Geometry Common Core, 2011 View details

1. Tangent Lines

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Exercise 44 Page 769

Notice that the given figure is a 30^(∘)-60^(∘)-90^(∘) triangle.

28

Practice makes perfect

Notice that the given right triangle has a marked angle measuring 60^(∘). Therefore, by the Triangle Angle Sum Theorem the measure of the third angle must be 30^(∘).

In a 30^(∘)-60^(∘)-90^(∘) triangle, the hypotenuse is 2 times the length of the shorter leg.

b = 2(14) ⇔ b = 28

Subchapter links

Lesson Check p.766

Standardized Test Prep p.769

Mixed Review p.769