SAS triangle

The triangle has two sides long 7 and 19 and included angle 36°.

Calculate area of this triangle.

Correct result:

S =  34.4


S=12ah=12absinγ=12139sin36=34.4S = \dfrac12 a h = \dfrac12 a b \sin \gamma = \dfrac12 13 \cdot 9 \cdot \sin 36^\circ = 34.4

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