SAS triangle

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

Calculate area of this triangle.

Correct answer:

S =  34.4

Step-by-step explanation:

$S={\displaystyle \frac{1}{2}}ah={\displaystyle \frac{1}{2}}ab\sin \gamma ={\displaystyle \frac{1}{2}}13\cdot 9\cdot \sin 36^{\circ }=34.4$

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