Question

Помогите решить срочно!!!!

Answer 1

$< c = 60^{0} \\ \dfrac{ab}{sın60^{0}} = 2 \times r\\ \\ \dfrac{ab}{sın60^{0}} = 2 \times 4 \\ \\ ab = 8 \dfrac{ \sqrt{3} }{2} \\ ab = 4 \sqrt{3}$