Hướng dẫn giải bài toán hình lớp 8 HKI

Hướng dẫn giải bài toán hình lớp 8 HKI

Hướng dẫn giải bài toán hình lớp 8 HKI

Posted: 06 Dec 2020 10:18 PM PST

 Câu 6: Cho tam giác ABC vuông tại A (AB<AC), đường cao AH. Vẽ HD Ʇ AB, HE Ʇ AC (D∈ AB, E ∈ AC). <!--[if !supportLists]-->a.   <!--[endif]-->Chứng minh ADHE là hình chử...

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Hướng dẫn giải bài trường THPT Tây Thạnh

Posted: 06 Dec 2020 10:08 AM PST

 Câu 9 : điện áp giữa 2 đầu một đoạn mạch là u=150cos100πt (V). Cứ mỗi giây có bao nhiêu lần điện áp này bằng 0. <!--[if !supportLists]-->a.      <!--[endif]-->100 lần           b. 50...

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