Ответ:S = 1/2 ab * sin (ab)
По теореме косинусов
с^2 = a^2 + b^2 - 2ab*cos60
196 = 36 + b^2 -6b
b^2 - 6b - 160 = 0
D = 36 + 640 = 676
b1 = (6 + 26)/2 = 32/2 = 16
S = 1/2 *6 * 16 *V3/2 = 96V3/4 = 24V3
Объяснение:
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Ответ:S = 1/2 ab * sin (ab)
По теореме косинусов
с^2 = a^2 + b^2 - 2ab*cos60
196 = 36 + b^2 -6b
b^2 - 6b - 160 = 0
D = 36 + 640 = 676
b1 = (6 + 26)/2 = 32/2 = 16
S = 1/2 *6 * 16 *V3/2 = 96V3/4 = 24V3
Объяснение: