MediumLaws of sines & cosines

OpenStax, Algebra and Trigonometry 2e §10.2 Non-right Triangles: Law of Cosines · Exercise 31 · Trigonometry · Laws of sines & cosines

Non-right Triangles: Law of Cosines · Exercise 31

Use Heron’s formula to find the area of the triangle. Round to the nearest hundredth.

$a = 1.6 yd, b = 2.6 yd, c = 4.1 yd$

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OpenStax, Algebra and Trigonometry 2e · §10.2 Non-right Triangles: Law of Cosines · Exercise 31

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