Angle measure: The sides of a triangle measure 18 , 25 and 36 inches.

[tiny7smom]

The sides of a triangle measure 18 , 25 and 36 inches. To the nearest degree, what is the measure of the largest angle?

 

[mmm4444bot]

The sides of a triangle measure 18 , 25 and 36 inches. To the nearest degree, what is the measure of the largest angle?

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[GrandMa5TR]

Here you have side, side, side. To solve this we can use the law of cosines "cos(A) = ( b² + c² − a²)/(2bc)" to get each angle. Once you have that just name which one is the largest.

 

[tiny7smom]

GrandMa5TR, thank you very much.