znanija.com/task/34932765
а) S(ΔAMK) = (3/5)S(ΔAMD) =(3/5)*1/2S = 0,3S .
см вложение
б) Да верно : S₁ =S ₂
S₁ = a₁*b₁sinα α = ∠BAD
S₂ = a₂*b₂ sinα
ΔCMF ~ΔAME
a₁ / a₂ = CM/ AM = b₂ /b₁ ⇒a₁*b₁= a₂ *b₂ ⇔ a₁*b₁sinα= a₂ *b₂ sinα ⇔
S₁ = S₂
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znanija.com/task/34932765
а) S(ΔAMK) = (3/5)S(ΔAMD) =(3/5)*1/2S = 0,3S .
см вложение
б) Да верно : S₁ =S ₂
S₁ = a₁*b₁sinα α = ∠BAD
S₂ = a₂*b₂ sinα
ΔCMF ~ΔAME
a₁ / a₂ = CM/ AM = b₂ /b₁ ⇒a₁*b₁= a₂ *b₂ ⇔ a₁*b₁sinα= a₂ *b₂ sinα ⇔
S₁ = S₂