Ответ:
∠C=19,8°; ∠B=80,2°;
Объяснение:
BC=12 см;
AB =4 см;
∠A=80°;
∠B ∠C ? sin∠C=AB*sin∠A/BC=4*sin80°/12=0,338; ∠C=19,8°;
∠B=180-∠A-∠C=180-80-19,8=80,2°;
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Ответ:
∠C=19,8°; ∠B=80,2°;
Объяснение:
BC=12 см;
AB =4 см;
∠A=80°;
∠B ∠C ? sin∠C=AB*sin∠A/BC=4*sin80°/12=0,338; ∠C=19,8°;
∠B=180-∠A-∠C=180-80-19,8=80,2°;