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10.5 Trigonometry and Area

10.5 Trigonometry and Area. What is the area of a regular nonagon with 10-cm sides?. Finding Area. A stop sign is a regular octagon. The standard size has a 16.2-in. radius. What is the area of the stop sign to the nearest square inch?. Area of a Triangle Given SAS.

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10.5 Trigonometry and Area

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  1. 10.5 Trigonometry and Area • What is the area of a regular nonagon with 10-cm sides?

  2. Finding Area • A stop sign is a regular octagon. The standard size has a 16.2-in. radius. What is the area of the stop sign to the nearest square inch?

  3. Area of a Triangle Given SAS • The area of a triangle is half the product of the lengths of two sides and the sine of the included angle.

  4. Finding Area • What is the area of the triangle?

  5. More Practice!!!!! • Homework – Textbook p. 646 #6 – 18 EVEN.

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