If sides A and B of a triangle have lengths of 7 and 5 respectively, and the angle between them is $(3pi)/4$ , then what is the area of the triangle?

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If sides A and B of a triangle have lengths of 7 and 5 respectively, and the angle between them is $(3pi)/4$ , then what is the area of the triangle?

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Answer 1 · 2015-12-31T11:05:38

Area = $12.38$ Units

Explanation:

We know the Area of triangle where two sides and their included angle are given, is equal to $(Side1 * Side2 * sin (C)/2)$ Where C is expressed in Radians.
$:. Area = 7*5*sin(3*pi/4)/2 or 7*5*sin(2.356)/2 or Area = 12.38$ [Answer]

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If sides A and B of a triangle have lengths of 7 and 5 respectively, and the angle between them is $(3pi)/4$ , then what is the area of the triangle?

1 Answer

Explanation:

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If sides A and B of a triangle have lengths of 7 and 5 respectively, and the angle between them is $(3pi)/4$ , then what is the area of the triangle?