rahab4783 rahab4783

07-03-2018
Mathematics

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A triangle has an area of 1102 m², and two of the sides of the triangle have lengths 60 m and 56 m. find the angle included by these two sides.

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sqdancefan sqdancefan

07-03-2018

A = (1/2)*a*b*sin(C)
1102 m^2 = (1/2)*(60 m)*(56 m)*sin(C)
2*1102/(60*56) = 551/840 = sin(C)
C = arcsin(551/840) ≈ 41°

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