Відповідь:
S = a*b*sinA = 4*9*sin30 = 36*0,5 = 18 (cm²)
a = 4 (cm)
a = 9 (cm)
A = 180° - 150° = 30°
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Відповідь:
S = a*b*sinA = 4*9*sin30 = 36*0,5 = 18 (cm²)
a = 4 (cm)
a = 9 (cm)
A = 180° - 150° = 30°