Question

Помогите с 3 номером

Answer 1

tg(BOD)=1/2

tg(<AOC)=1/3

tg(AOB)=tg(180°-(<BOD+

<(AOC)=-tg(BOD+<AOC)=

-(1/2+1/3)/(1-1/2*1/3)=

-(5/6)/(6-1)/6=-1

Answer 2

-1 будет...Блин ,не то фото прикрепил.

Answer 3

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