[tex]\displaystyle \sf \text{\'Area trigonom\'etrica de um tri\^angulo} : \\\\ S =\frac{a\cdot b\cdot sen(\theta)}{2} \\\\\ onde : \\\\ \text{a, b = lados ;}\\\\ \theta =\text{\^angulo entre os lados a e b } \ ;\\\\\ temos : \\\\ a = 15\ , \ b =12 \ , \ \theta = 30\º\\\\ \text{substituindo na f\'ormula} : \\\\ S = \frac{15\cdot \not 12\cdot sen(30\º)}{\not 2} \\\\\\ S =\frac{15\cdot \not 6\cdot 1}{\not 2} \\\\\\ S = 15\cdot 3\\\\ \large\boxed{\sf \ S = 45\ u.a\ }\checkmark[/tex]
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[tex]\displaystyle \sf \text{\'Area trigonom\'etrica de um tri\^angulo} : \\\\ S =\frac{a\cdot b\cdot sen(\theta)}{2} \\\\\ onde : \\\\ \text{a, b = lados ;}\\\\ \theta =\text{\^angulo entre os lados a e b } \ ;\\\\\ temos : \\\\ a = 15\ , \ b =12 \ , \ \theta = 30\º\\\\ \text{substituindo na f\'ormula} : \\\\ S = \frac{15\cdot \not 12\cdot sen(30\º)}{\not 2} \\\\\\ S =\frac{15\cdot \not 6\cdot 1}{\not 2} \\\\\\ S = 15\cdot 3\\\\ \large\boxed{\sf \ S = 45\ u.a\ }\checkmark[/tex]
u.a = unidade de área