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How do you calculate the area of three trig beacons making a triangle?
Wiki User
∙ 11y ago
The trig beacons are basically points on a grid. Let's name these beacons (1), (2), (3). They all have coordinates of the form (x,y).
Using the distance formula, √[(x2-x1)2+(y2-y1)2], calculate the distance between (1) and (2) [call it A], (1) and (3) [call this B], (2) and (3) [call it C].
Calculate the semiperimeter, which would be (A+B+C)/2. Call this S.
Using Heron's formula, the area of the triangle is √[S(S-A)(S-B)(S-C)].
Wiki User
∙ 11y ago
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