Ch 10'4 Tangent Ratio

1
Ch 10.4 Tangent Ratio

• Find the tangent of an acute angle.

2

• A trigonometric ratio is a ratio of the lengths
  of two sides of a right triangle.
• For any acute angle of a right triangle, there is
  a leg opposite the angle and a leg adjacent to
  the angle.

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3
Tangent Ratio

• For any acute angle A of a right triangle

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4
Practice

• Find tan A and tan B as fractions in simplified
  form and as decimals rounded to four decimal
  places.

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5
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• You can use the TAN function on a calculator to
  approximate the tangent of an angle.
• When calculating the tangent of an angle, be sure
  your calculator is in DEGREE mode.
• You can also use the table of trigonometric
  ratios on page 705.

6
Practice

• Use a tangent ratio to find the value of x. Round
  your answer to the nearest tenth.

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7
Classwork

• Geometry book
• Page 560 1-10
• Neighbor help is ok