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# Post13307o2_wed - Find the area of the hexagon Note Regular...

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Section 7.2 – Area of a Triangle 1 Section 7.2 Area of a Triangle Given Recall the area of a triangle is given by 1 2 A bh = . Example 1: Find the area of the triangle. a. 29 ° 120 17 K b. j = 4.1 m A J k = 5.6 m b a θ Area of a triangle 1 sin 2 A ab = a , b are the lengths of two sides of a triangle is the angle between them. 53 O 36 O

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Section 7.2 – Area of a Triangle 2 Example 2: Find the area of an isosceles triangle with legs measuring 7 inches and base angles measuring 22.5 o . Example 3: If the area of ABC is 20 square centimeters, a = 16 cm and c = 5 cm, find all possible measures for angle B.
Section 7.2 – Area of a Triangle 3 Example 4: A regular hexagon is inscribed in a circle of radius 4m.

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Unformatted text preview: Find the area of the hexagon. Note: Regular means that all of the sides are equal and all of the angles are equal. Area of a Segment of a Circle You can also find the area of a segment of a circle. The shaded area of the picture is an example of a segment of a circle. A O B To find the area of a segment, find the area of the sector with central angle θ and radius OA. Then find the area of OAB ∆ . Then subtract the area of the triangle from the area of the sector. Example 5: Find the area of the segment of the circle with radius 8 and central angle measuring 4 π . Give an exact answer....
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Post13307o2_wed - Find the area of the hexagon Note Regular...

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