Ответ: 58.9 см².
Объяснение:
S(ABC)=1/2*AC*BH.
BH/AH=tgA;
BH=AH/tg30 = 12/(√3/3)=4√3;
S=(1/2)*(17*4√3)=34√3 = 58.889≈58.9 см².
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Verified answer
Ответ: 58.9 см².
Объяснение:
S(ABC)=1/2*AC*BH.
BH/AH=tgA;
BH=AH/tg30 = 12/(√3/3)=4√3;
S=(1/2)*(17*4√3)=34√3 = 58.889≈58.9 см².