Consumer Math Slides January 15, 2008
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Consumer Math Slides January 15, 2008

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Introduction to trigonometry.

Introduction to trigonometry.

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Consumer Math Slides January 15, 2008 Presentation Transcript

  • 1. Star Trigonometry view this picture on flickr.com to learn a whole lot more about trig http://flickr.com/photos/69836785@N00/355386913/
  • 2. (1) You just bought 40 L of gas. 93 (6) Find 75% of 124 If you get a discount of 3.5¢/L, $1.40 how much money will you save? (7) Find 75% of 110 82.5 (2) What is the cost of one $20.50 CD if 4 cost $82.00? B C D A 1 Name Hourly Wage Hours Earnings (3) What is the cost of one if 2 2 Abbie 7 4 $17.50 T-shirts cost $35.00? 3 Barry 8 5 4 Cindy 9 6 The following ingredients are used to make 5 David 10 7 18 banana muffins: (8) Name one LABEL Name, Hourly 6 small, ripe bananas 1 cup brown sugar Wage, Hours, in the spreadsheet. 1/2 cup white sugar 2 eggs or Earnings 1/2 cup butter 3 cups flour (9) Write a spreadsheet formula 2 tsp. baking soda 2 tsp. baking powder that would calculate the average 1 cup chocolate chips 1 tsp. salt earnings of all 4 people. (4) How much white sugar (5) How much butter is =AVERAGE(D2..D5) is used to make 9 muffins? needed to make 45 muffins? 1 1/4 cups 1/4 cup (10) What is 99 x 11? 1089
  • 3. A scale drawing of a family room has dimensions of 4.5 cm by 3.25 cm. In the scale drawing, 1 cm represents 3 m. What are the dimensions of the actual family room? An apartment building is 150 m tall. If the height of the building in the scale drawing is 25 cm, what scale is used in the drawing?
  • 4. SOH CAH TOA HYPOTENUSE ADJACENT OPPOSITE OPPOSITE ADJACENT THETA θ
  • 5. SOH CAH TOA
  • 6. SOH CAH TOA
  • 7. Find the missing sides of the following triangles using equivalent ratios.
  • 8. Represent a circular window with a diameter of 50 cm. Use a scale of 1:10.
  • 9. An apartment building is 150 m tall. If the height of the building in the scale drawing is 25 cm, what scale is used in the drawing?