Chứng minh rằng AH = AK và BA = BM
giúp mik nka <style id="sweezy-cursors--styles" type="text/css">body a,
body button,
body [type='button'],
body input[type='reset'],
body input[type='submit'],
body [role="button"],
::-webkit-search-cancel-button,
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----- Nội dung dịch tự động từ ảnh -----
Bài 3. (3,25 điểm)
1) Cho tam giác ABC vuông tại A , có AH là đường cao (H thuộc BC) và AM là tia phân giác của
góc HAC (M thuộc BC). Kẻ MK vuông góc với AC tại K.
a) Chứng minh rằng AH = AK và BA = BM.
b) Gọi 1 là giao điểm của đường thẳng MK và đường thẳng AH. Chứng minh rằng AM 1C7 và
=
=
KH // CI.
2) Cho tam giác ABC có độ dài ba cạnh lần lượt là AB = 5, BC = 17, CA = b. Biết CA là cạnh có
độ dài lớn nhất trong ba cạnh và b là một số nguyên dương. Tìm tất cả các giá trị của b.
=
=
body button,
body [type='button'],
body input[type='reset'],
body input[type='submit'],
body [role="button"],
::-webkit-search-cancel-button,
::-webkit-search-decoration,
::-webkit-scrollbar-button,
::-webkit-file-upload-button,
body .sweezy-custom-cursor-hover {
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----- Nội dung dịch tự động từ ảnh -----
Bài 3. (3,25 điểm)
1) Cho tam giác ABC vuông tại A , có AH là đường cao (H thuộc BC) và AM là tia phân giác của
góc HAC (M thuộc BC). Kẻ MK vuông góc với AC tại K.
a) Chứng minh rằng AH = AK và BA = BM.
b) Gọi 1 là giao điểm của đường thẳng MK và đường thẳng AH. Chứng minh rằng AM 1C7 và
=
=
KH // CI.
2) Cho tam giác ABC có độ dài ba cạnh lần lượt là AB = 5, BC = 17, CA = b. Biết CA là cạnh có
độ dài lớn nhất trong ba cạnh và b là một số nguyên dương. Tìm tất cả các giá trị của b.
=
=