03.16.10 Do Now

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03.16.10Do Now

• Find the missing angle measures.

45
60
2
Chapter 8 Right Triangles and Trigonometry

• Pythagorean Theorem
• Special Right Triangles
• Trigonometric Ratios
• Law of Sines
• Law of Cosines

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8-2 The Pythagorean Theorem

• Objective Use the Pythagorean Theorem to find
  side lengths of right triangles and determine if
  triangles are right triangles.

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The Pythagorean Theorem
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Ex. 1 Is the triangle below a right triangle?
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Ex. 2 Finding Length of a Hypotenuse
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Ex. 3 Finding the length of a leg.
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The Petronas Twin TowersKuala Lumpur,
Malaysia
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The walkway connecting the two Petronas towers is
45.52m, and the support arms meet the building
47.57m below the walkway. How long are the
support arms?