смежные углы a и b
a + b = 180
tg(180 - a) = - tg a
b = 180 - a
tg b = tg (180 - a) = - tg a
Правильно !
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смежные углы a и b
a + b = 180
tg(180 - a) = - tg a
b = 180 - a
tg b = tg (180 - a) = - tg a
Правильно !