CH. 9 Geometry BIG IDEAS MATH REVIEW

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15 Terms

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Pythagorean Triple

a set of 3 positive integers that satisfy the pythagorean theorem

<p>a set of 3 positive integers that satisfy the pythagorean theorem</p>
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Pythagorean Theorem

Equation that helps find side lengths of triangles.

a²+b²=c²

<p>Equation that helps find side lengths of triangles.</p><p>a²+b²=c²</p>
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Tangent

Opposite/adjacent

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Sine

opposite/hypotenuse

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Cosine

adjacent/hypotenuse

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Angle of Elevation

Angle that an upward line of sight creates with the horizontal line.

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Angle of Depression

Angle that a downward line of sight creates with a horizontal line

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Inverse Tanget

If tanA = x, then tan-¹ x = m∠A

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Inverse Sine

If sinA = x, then sin-¹ x = m∠A

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Inverse Cosine

If cosA = x, then cos-¹ x = m∠A

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Solve a Right Triangle

to determine the measures of all six parts. you can solve this if you know the two side lengths and or one side length and one acute angle measure

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Sine and Cosine of Complementary Angles

sin A = cos(90˚- A) = cos B

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Special Triangle 30-60-90

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Special Triangle 45-45-90

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Pythagorean Inequalities

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