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A line drawing diagram illustrating a trigonometry problem with a hotel and a tall tower on a city street, showing angles and a 1km distance.

A line drawing diagram illustrating a trigonometry problem with a hotel and a tall tower on a city street, showing angles and a 1km distance.

๋‹ต์„ ์ฐพ์œผ๋ ค๋ฉด ์ถ•์ฒ™ ๋„๋ฉด์ด ์•„๋‹Œ ์‚ผ๊ฐ๋ฒ•์„ ์‚ฌ์šฉํ•ด์•ผ ํ•ฉ๋‹ˆ๋‹ค. ๋ผ์šธ์€ ์ฃผ์š” ๋„๋กœ ์ค‘ ํ•˜๋‚˜์— ๋†’์€ ํƒ‘์ด ์žˆ๋Š” ๋„์‹œ๋ฅผ ๋ฐฉ๋ฌธํ•˜๊ณ  ์žˆ์Šต๋‹ˆ๋‹ค. ๊ทธ๊ฐ€ ๋ฌต๊ณ  ์žˆ๋Š” ํ˜ธํ…”๋„ ๊ฐ™์€ ๊ธธ์— ์žˆ์Šต๋‹ˆ๋‹ค. ๋ผ์šธ์€ ํ˜ธํ…”์—์„œ ์ถœ๋ฐœํ•˜์—ฌ ํƒ€์›Œ๋ฅผ ์ง€๋‚˜ ํ˜ธํ…”์—์„œ ์ •ํ™•ํžˆ 1km ๋–จ์–ด์ง„ ์ด์ •ํ‘œ M์—์„œ ๋ฉˆ์ถฅ๋‹ˆ๋‹ค. ๋ผ์šธ์€ ๋งŒ๋ณด๊ณ„๋ฅผ ๊ฐ€์ง€๊ณ  ์žˆ์œผ๋ฉฐ ์ด๋ฅผ ์‚ฌ์šฉํ•˜์—ฌ ํƒ€์›Œ์˜ ๋†’์ด๋ฅผ ์ถ”์ •ํ•  ๊ณ„ํš์ž…๋‹ˆ๋‹ค. ๋ผ์šธ์€ ๊ฑฐ๋ฆฌ๊ณ„๋ฅผ ๋ˆˆ์•ž์— ๋‘๊ณ  ํƒ‘ ๊ผญ๋Œ€๊ธฐ์˜ ๊ฒฝ์‚ฌ๊ฐ์ด 11โ—ฆ ๋ผ๋Š” ๊ฒƒ์„ ์•Œ์•„๋ƒ…๋‹ˆ๋‹ค. ํ˜ธํ…”๋กœ ๋Œ์•„์™€์„œ ๊ทธ๊ณณ์—์„œ ํƒ‘ ๊ผญ๋Œ€๊ธฐ์˜ ๊ณ ๋„ ๊ฐ๋„๋ฅผ ์ธก์ •ํ•œ ๊ฒฐ๊ณผ 20โ—ฆ ์ธ ๊ฒƒ์„ ์•Œ์•˜์Šต๋‹ˆ๋‹ค. H๋ฅผ ๋ผ์šธ์˜ ํ˜ธํ…” ์œ„์น˜(์ฃผ์š” ๋„๋กœ๋ฅผ ๋”ฐ๋ผ)๋ฅผ ๋‚˜ํƒ€๋‚ด๊ณ , B๋ฅผ ํƒ‘์˜ ๊ธฐ์Šญ์„ ๋‚˜ํƒ€๋ƒ…๋‹ˆ๋‹ค. ๋„๋กœ๋Š” ํ‰ํ‰ํ•˜๊ณ  H, B, M์€ ์ผ์ง์„ ์ƒ์— ์žˆ๋‹ค๊ณ  ๊ฐ€์ •ํ•  ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค. ๋‹ค์Œ ๋ฌธ์ œ์—์„œ๋Š” ๊ฐ๋„๊ฐ€ ๋ผ์šธ์˜ ๋ˆˆ ๋†’์ด๊ฐ€ ์•„๋‹Œ ์ง€๋ฉด์— ์žˆ๋Š” ๊ฒƒ์ฒ˜๋Ÿผ ๊ฐ๋„๋ฅผ ์ธก์ •ํ•œ๋‹ค๋Š” ๋‹จ์ˆœํ™” ๊ฐ€์ •์„ ํ•˜๊ณ , T๋Š” ํƒ‘์˜ ๊ผญ๋Œ€๊ธฐ๋ฅผ ๋‚˜ํƒ€๋‚ด๋ฉฐ ๋ฐ‘๋ฉด B๋ณด๋‹ค ์ˆ˜์ง์œผ๋กœ ์œ„์— ์žˆ์Šต๋‹ˆ๋‹ค. ์‚ผ๊ฐํ˜• HTM์„ ๋‚˜ํƒ€๋‚ด๋Š” ์ด๋ฏธ์ง€๋ฅผ ์ƒ์„ฑํ•ฉ๋‹ˆ๋‹ค. ์  B๋ฅผ ์ถ”๊ฐ€ํ•˜๊ณ  ์  B์™€ T๋ฅผ ์ ์„ ์œผ๋กœ ์—ฐ๊ฒฐํ•ฉ๋‹ˆ๋‹ค. ์œ„์—์„œ ์–ธ๊ธ‰ํ•œ ๊ธธ์ด(๋ฏธํ„ฐ) ๋ฐ ๊ฐ๋„์— ๋Œ€ํ•œ ์ •๋ณด๋ฅผ ํฌํ•จํ•˜์„ธ์š”. ์Šค์ผ€์น˜์˜ ํฌ๊ธฐ๋ฅผ ์กฐ์ •ํ•  ํ•„์š”๋Š” ์—†์Šต๋‹ˆ๋‹ค. Mehr sehen