각도 및 삼자릿수 방위각 측정 · 고등 과정
도입됨| English | 의미 |
|---|---|
| bearing/ˈbeərɪŋ/ | 방위각 |
A walking route has bearing 070° from A to B. Turning around changes the reference point and reverses the direction; it does not keep the same bearing.
- A walking route has bearing 070° from A to B. Turning around changes the reference point and reverses the direction; it does not keep the same bearing.
- This lesson studies bearing 方位角: A direction measured clockwise from north at the starting point.
Choose the mathematical structure
- Draw a north line at the starting point, then measure clockwise to the route. Write three digits: east 090°, south 180°, west 270°, north 000°. NE, SE, SW and NW are 045°,135°,225°,315°. For the reverse bearing add 180° and reduce modulo 360°. Use a ruler for a stated-scale length and the correct protractor scale for a stated angle.
- State the allowed inputs and units before calculating. An equation should express the relationship, not just record a calculator entry.
왜 070°의 반방향bearing이 250°와 같습니까?
난이도 1/5 · 100 코인 + 오늘 첫 완료 시 소액 보너스
반방향bearing은 정확히 180°만 다릅니다: 두 지점의 평행 북쪽 선은 교차각을 등하게 만듭니다. 360-70=290°는 반方向和 reflex complement를 혼동합니다
Work through a checked case
- Check the result against the starting quantities. Substitute into the original relation, or compare the graph and numerical answer where appropriate.
From A to B the bearing 070° is 70° clockwise from north. From B to A it is 070+180=250°. A bearing of 320° reverses to 500-360=140°. East is 090°, not 90 without its three-digit form. A route bearing 120° points southeast of the starting point, making 30° below east. On a 1:10000 map, a 3 cm route represents 300 m; to construct bearing 120°, place the protractor centre at the route start, align its zero with north and measure clockwise. Keep the ruler scale and angular direction as separate decisions.
각과 삼자리 방위각 측정
시작점에 북쪽 선을 그은 뒤, 경로를 따라 시계 방향으로 측정하십시오.
작업 예시 문장을 분류하고, 각 결정에 근거하는 단위 또는 불변량을 설명하십시오.
070°의 반사 방위각을 구하십시오.
난이도 2/5 · 140 코인 + 오늘 첫 완료 시 소액 보너스
070+180=250°.
Test a tempting shortcut
- A bearing is measured at the departure point, not the destination. Read clockwise from north rather than the acute angle to the nearest compass axis. The back bearing differs by 180°, even when the diagram is oblique.
- When a shortcut fails, identify the assumption it breaks. Keep an exact value until the requested final rounding.
The reverse bearing of 070° is 290°. This claim is false. Explain which definition or assumption it violates.
320°의 반사 방위각을 구하십시오.
난이도 2/5 · 140 코인 + 오늘 첫 완료 시 소액 보너스
320+180=500; 여기서 360를 뺍니다.
070°의 반사 방위각은 290°입니다.
난이도 1/5 · 100 코인 + 오늘 첫 완료 시 소액 보너스
방위각은 출발점에서 측정하며 목적지가 아닙니다.nearest compass axis(가장 가까운 나침반 축)까지의 예각이 아닌 북쪽에서 시계 방향으로 읽으십시오. 도식이 비스듬하더라도 후미 방향(반사 방위각)은 180°만 다릅니다.
Interpret a new situation
- AQA G15 includes measured lengths/angles, maps, the eight compass directions and three-figure bearings. State which point supplies north and distinguish a numerical bearing from a measured scale distance.
- A complete solution gives the mathematical result and explains what it means. Check that it is possible in the stated context.
동남방의 방위각을 도 단위로 나타내십시오.
난이도 2/5 · 140 코인 + 오늘 첫 완료 시 소액 보너스
동남은 동쪽 090°와 남쪽 180°의 중간 지점입니다.
각 방위 conventions을 규칙에 매칭하십시오.
난이도 2/5 · 140 코인 + 오늘 첫 완료 시 소액 보너스
방위는 항상 출발점에서 북쪽을 기준으로 시계 방향으로 세 자리 숫자로 측정합니다.
Use this in your course
- 8300 · Higher · 3.4. Match the target tier and specification before assigning extensions.
- Give the method before the final answer, and use the paper's calculator and formula rules. Review a wrong answer by locating the first invalid step.
A direction measured clockwise from north at the starting point. Choose the relationship, show the method, check its assumptions and interpret the result.