cho biết góc AOB=120 ĐỘ.TRong góc AOB vẽ các tia OM và ON sao cho OA vuông góc OM,OBcvuông góc ON.Tính số đo góc AOM,BON. Chứng minh góc AOB=MOB

Question

huyminh470 · Answer

a) Vì OA&#x22A5;OM(gt)" role="presentation" style="box-sizing: border-box; display: inline; font-weight: normal; line-height: normal; font-size: 16px; text-indent: 0px; text-align: left; text-transform: none; letter-spacing: normal; word-spacing: normal; overflow-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; padding: 0px; margin: 0px; position: relative;" tabindex="0">OA⊥OM(gt)OA⊥OM(gt)
=> AOM&#x005E;=900." role="presentation" style="box-sizing: border-box; display: inline; font-weight: normal; line-height: normal; font-size: 16px; text-indent: 0px; text-align: left; text-transform: none; letter-spacing: normal; word-spacing: normal; overflow-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; padding: 0px; margin: 0px; position: relative;" tabindex="0">AOMˆ=900.AOM^=900.
Vì OB&#x22A5;ON(gt)" role="presentation" style="box-sizing: border-box; display: inline; font-weight: normal; line-height: normal; font-size: 16px; text-indent: 0px; text-align: left; text-transform: none; letter-spacing: normal; word-spacing: normal; overflow-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; padding: 0px; margin: 0px; position: relative;" tabindex="0">OB⊥ON(gt)OB⊥ON(gt)
=> BON&#x005E;=900." role="presentation" style="box-sizing: border-box; display: inline; font-weight: normal; line-height: normal; font-size: 16px; text-indent: 0px; text-align: left; text-transform: none; letter-spacing: normal; word-spacing: normal; overflow-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; padding: 0px; margin: 0px; position: relative;" tabindex="0">BONˆ=900.BON^=900.
b) Ta có:
{AON&#x005E;+MON&#x005E;=AOM&#x005E;(gt)BOM&#x005E;+MON&#x005E;=BON&#x005E;(gt)" role="presentation" style="box-sizing: border-box; display: inline; font-weight: normal; line-height: normal; font-size: 16px; text-indent: 0px; text-align: left; text-transform: none; letter-spacing: normal; word-spacing: normal; overflow-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; padding: 0px; margin: 0px; position: relative;" tabindex="0">{AONˆ+MONˆ=AOMˆ(gt)BOMˆ+MONˆ=BONˆ(gt){AON^
{AON&#x005E;+MON&#x005E;=AOM&#x005E;(gt)BOM&#x005E;+MON&#x005E;=BON&#x005E;(gt)" role="presentation" style="box-sizing: border-box; display: inline; font-weight: normal; line-height: normal; font-size: 16px; text-indent: 0px; text-align: left; text-transform: none; letter-spacing: normal; word-spacing: normal; overflow-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; padding: 0px; margin: 0px; position: relative;" tabindex="0">+MON^=AOM^(gt)BOM^+MON^=BON^(gt)
Mà AOM&#x005E;=BON&#x005E;(=900)." role="presentation" style="box-sizing: border-box; display: inline; font-weight: normal; line-height: normal; font-size: 16px; text-indent: 0px; text-align: left; text-transform: none; letter-spacing: normal; word-spacing: normal; overflow-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; padding: 0px; margin: 0px; position: relative;" tabindex="0">AOMˆ=BONˆ(=900).AOM^=BON^(=900).
&#x21D2;AON&#x005E;+MON&#x005E;=BOM&#x005E;+MON&#x005E;" role="presentation" style="box-sizing: border-box; display: inline; font-weight: normal; line-height: normal; font-size: 16px; text-indent: 0px; text-align: left; text-transform: none; letter-spacing: normal; word-spacing: normal; overflow-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; padding: 0px; margin: 0px; position: relative;" tabindex="0">⇒AONˆ+MONˆ=BOMˆ+MONˆ⇒AON^+MON^=BOM^+MON^
=> AON&#x005E;=BOM&#x005E;." role="presentation" style="box-sizing: border-box; display: inline; font-weight: normal; line-height: normal; font-size: 16px; text-indent: 0px; text-align: left; text-transform: none; letter-spacing: normal; word-spacing: normal; overflow-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; padding: 0px; margin: 0px; position: relative;" tabindex="0">AONˆ=BOMˆ.AON^=BOM^.
Hay NOA&#x005E;=MOB&#x005E;(&#x111;pcm)." role="presentation" style="box-sizing: border-box; display: inline; font-weight: normal; line-height: normal; font-size: 16px; text-indent: 0px; text-align: left; text-transform: none; letter-spacing: normal; word-spacing: normal; overflow-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; padding: 0px; margin: 0px; position: relative;" tabindex="0">NOAˆ=MOBˆ(đpcm).NOA^=MOB^(đpcm).
Chúc bạn học tốt:3

hunghunghung · Answer

Xem trong hình:

cho biết góc AOB=120 ĐỘ.TRong góc AOB vẽ các tia OM và ON sao cho OA vuông góc OM,OBcvuông góc ON.Tính số đo góc AOM,BON. Chứng minh góc AOB=MOB

TRẢ LỜI

Bạn muốn hỏi điều gì?

Tham Gia Group Dành Cho Lớp 7 Chia Sẻ, Trao Đổi Tài Liệu Miễn Phí

Bạn muốn hỏi điều gì?

Tìm kiếm với hình ảnh

Hãy đăng nhập hoặc tạo tài khoản miễn phí!

Lưu vào

cho biết góc AOB=120 ĐỘ.TRong góc AOB vẽ các tia OM và ON sao cho OA vuông góc OM,OBcvuông góc ON.Tính số đo góc AOM,BON. Chứng minh góc AOB=MOB

TRẢ LỜI

Bạn muốn hỏi điều gì?

Tham Gia Group Dành Cho Lớp 7 Chia Sẻ, Trao Đổi Tài Liệu Miễn Phí

Bạn muốn hỏi điều gì?

Lý do báo cáo vi phạm?