Ответ:
φ = 180° - (γ + β)
φ = 180° -(α + β) =180°-(α + 2α) = 180°- 3α =
= 180° - 3·11° = 147°
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Ответ:
φ = 180° - (γ + β)
φ = 180° -(α + β) =180°-(α + 2α) = 180°- 3α =
= 180° - 3·11° = 147°