Предмет: Геометрия, автор: eminegulmustafaeva

В прямоугольном треугольнике угол D равен 90 градусов, угол Q равен 30 градусам, PD равен 1,2 см. Нужно найти гипотенузу PQ

Ответы

Автор ответа: genius3998
1

Ответ:

Для решения задачи можно использовать теорему синусов.

В треугольнике PDQ углы Q и D известны, а сторона PD равна 1,2 см. Найдем гипотенузу PQ.

Теорема синусов гласит:

a/sinA = b/sinB = c/sinC,

где a, b, c - стороны треугольника, A, B, C - противолежащие им углы.

Применив теорему синусов к треугольнику PDQ, получим:

PQ/sinQ = PD/sinD.

Заменим известные значения:

PQ/sin30 = 1,2/sin90.

Так как sin90 = 1, а sin30 = 1/2, уравнение примет вид:

PQ/(1/2) = 1,2/1.

Выразим PQ:

PQ = (1/2) * 1,2.

Упростим:

PQ = 0,6 см.

Таким образом, гипотенуза PQ равна 0,6 см.


eminegulmustafaeva: Спасибо вам❤
Похожие вопросы
Предмет: Английский язык, автор: safronovaalina201102
Reading Task 1. Read the reviews to the Kazakh movie "Tomiris" (2019) and choose only True sentences. Vocabulary Gritty - Mpaчный/мрачная Authentic-подлинный, настоящий Worth watching - достойный просмотра Nomadic tribes-кочевые племена Capture - снять (на видеокамеру) Decade-декада Was expecting - ожидал(-a) Backstory - предыстория Curiosity-любопытство Was shot - был снят A gritty historical epic with a non-Hollywood feel. Worth watching (Satilla on 14.12.2020) Well done authentic movie about the historical nomad queen Tomiris who, historians agree, stopped the Persian army and killed their king. The non-Hollywood place and casting are refreshing with the costumes and cinematography capturing the feel of the nomadic tribes well. Well, worth a viewing. Great movie with great historical accuracy (Camilla on 05.03.2020) I believe this is one of the best Asian movies of this decade. Disney should see this one and learn how to create a strong woman lead character. Out of curiosity, I watched it and my curiosity grew, I started reading lots of history books and this is a real story. Tomiris is a Scythian (now we know them as Turks) queen with lots of great backstory, unlike fake Mulan. I love the horse riding war scenes, very beautifully shot by director and acting was nothing close to what I was expecting! It was very good! Also one more reason why I loved this movie that it was shot like a real life situation, history is shown as it is written incredible history books. I think this is to all history enthusiasts and war movie lovers. Верных ответов: 3 Camilla considers Tomiris the best Asian movies of a decade. The film was shot like a real situation. The film captures the feel of nomadic tribes well. Satilla says that Tomiris is a Hollywood film. Camilla didn't love horse riding scenes.​