Solutions of the Examples in Hall And Knights Elementary Trigonometry
Solutions of the Examples in Hall And Knights Elementary Trigonometry
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In our eReader you can find the full English version of the book. Read Solutions of the Examples in Hall And Knights Elementary Trigonometry Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Solutions of the Examples in Hall And Knights Elementary Trigonometry
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XXI. B. Page 271.
1. Let the distance be . T miles; then by the rule on page 269, we have . : . R = 12; that is, the distance is 12 miles.
2. Let a feet be the height of lighthouse above the sea level ; then 152 = -^, or a = 150; that is, the height of lighthouse = 150 feet.
3. Let the distances in miles of the horizon visible from the masts of the ships be x^, x.^; then ' x, 2=— |'^-^ = 49; . -. X, =7, . -. The greatest distance at which one mast can be seen from the other = x^ f . F . _, = 15... miles.
, t' I XXI. ] DISTANCE AND DIP OF THE HORIZON. 189 4. Let the distances in miles of the horizon seen from the two masts be X, 1/ respectively, then -^ '^' "^ ' •■■ ^ = ^' also x + ij = 20; whence ij = 11.
Height of mast of second ship=: -|- feet = fZr feet = 80ft. Sin. O 5. Let . T, y be the distances in miles of the horizon visible from the mast and the lamp respectively ; , 3x73i 21 then x^= — 2~^ ■' •'• ^~~2' 35 and x + y = 2S; whence ?/ = y .
2?/2 352 1225 „^ . -. Height of lamp =-^ = -77-= ^ it- = 204 ft.
What to read after Solutions of the Examples in Hall And Knights Elementary Trigonometry?
You can find similar books in the "Read Also" column, or choose other free books by H S Henry Sinclair Hall to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
XXI. B. Page 271.
1. Let the distance be . T miles; then by the rule on page 269, we have . : . R = 12; that is, the distance is 12 miles.
2. Let a feet be the height of lighthouse above the sea level ; then 152 = -^, or a = 150; that is, the height of lighthouse = 150 feet.
3. Let the distances in miles of the horizon visible from the masts of the ships be x^, x.^; then ' x, 2=— |'^-^ = 49; . -. X, =7, . -. The greatest distance at which one mast can be seen from the other = x^ f . F . _, = 15... miles.
, t' I XXI. ] DISTANCE AND DIP OF THE HORIZON. 189 4. Let the distances in miles of the horizon seen from the two masts be X, 1/ respectively, then -^ '^' "^ ' •■■ ^ = ^' also x + ij = 20; whence ij = 11.
Height of mast of second ship=: -|- feet = fZr feet = 80ft. Sin. O 5. Let . T, y be the distances in miles of the horizon visible from the mast and the lamp respectively ; , 3x73i 21 then x^= — 2~^ ■' •'• ^~~2' 35 and x + y = 2S; whence ?/ = y .
2?/2 352 1225 „^ . -. Height of lamp =-^ = -77-= ^ it- = 204 ft.
What to read after Solutions of the Examples in Hall And Knights Elementary Trigonometry?
You can find similar books in the "Read Also" column, or choose other free books by H S Henry Sinclair Hall to read onlineMoreLess
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