If sides A and B of a triangle have lengths of 13 and 2 respectively, and the angle between them is $\frac{3 π}{4}$ $(3pi)/4$ , then what is the area of the triangle?

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Answer 1 · 2016-02-29T08:02:13

13 / $\sqrt{}$ $sqrt$ 2 areal units.

Area = A X B X sin ( angle between these sides ) / 2
sin 3 $π$ $pi$ /4 = sin ( $π$ $pi$ $-$ $-$ $π$ $pi$ /4 ) = sin $π$ $pi$ /4.

If sides A and B of a triangle have lengths of 13 and 2 respectively, and the angle between them is 3π4(3pi)/4, then what is the area of the triangle?