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In ΔLMN, l = 35 inches, m = 67 inches and n=91 inches. Find the measure of ∠N to the nearest degree.

 Apr 6, 2020
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Obtuse scalene triangle.
Sides: l= 35 m = 67 n = 91

Use the Law of Cosines to find all 3 angles


Angle ∠ L = 18.777° = 18°46'38″ = 0.328 rad
Angle ∠ M = 38.038° = 38°2'18″ = 0.664 rad
Angle ∠ N = 123.184° = 123°11'4″ = 2.15 rad

 Apr 6, 2020

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