The Elements of Plane Trigonometry
The Elements of Plane Trigonometry
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In our eReader you can find the full English version of the book. Read The Elements of Plane 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 The Elements of Plane Trigonometry
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Fig. 19.
Bearing is also often given in terms of the divisions of a mariner's compass. The circle is divided into 32 equal parts, the points of division being named as indicated* in the figure.
EXERCISES (i) The center pole of a tent is 20 ft. High, and its top is stayed by ropes 40 ft. Long ; what is the inclination of the rop^s to the ground ?
\2/ A man standing 140 ft. From the foot of a tower finds that the elevation of its top is 2S° 25'; what is the height of the tower ? ^p-..
p /m) At wh...at latitude is the circumference oiwAparallel of latitude equal to two-thirds y^ of the circumference of the equator ?
Suggestion. Let PEP'E' be a section of the earth through its axis, PP' its axis, ^ EE' the equator, LL' the circle of lati- FiG. 20. Tude. Then will EOL be the latitude.
4. The length of a degree of longitude at the equator is 69. 16 mi. ; find a formula for the length of a degree of longitude at latitude A.
THE RIGHT TRIANGLE 29 /sj A ladder 40 ft. Long reaches a window 33 ft.
What to read after The Elements of Plane Trigonometry?
You can find similar books in the "Read Also" column, or choose other free books by William P Pitt Durfee to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
Fig. 19.
Bearing is also often given in terms of the divisions of a mariner's compass. The circle is divided into 32 equal parts, the points of division being named as indicated* in the figure.
EXERCISES (i) The center pole of a tent is 20 ft. High, and its top is stayed by ropes 40 ft. Long ; what is the inclination of the rop^s to the ground ?
\2/ A man standing 140 ft. From the foot of a tower finds that the elevation of its top is 2S° 25'; what is the height of the tower ? ^p-..
p /m) At wh...at latitude is the circumference oiwAparallel of latitude equal to two-thirds y^ of the circumference of the equator ?
Suggestion. Let PEP'E' be a section of the earth through its axis, PP' its axis, ^ EE' the equator, LL' the circle of lati- FiG. 20. Tude. Then will EOL be the latitude.
4. The length of a degree of longitude at the equator is 69. 16 mi. ; find a formula for the length of a degree of longitude at latitude A.
THE RIGHT TRIANGLE 29 /sj A ladder 40 ft. Long reaches a window 33 ft.
What to read after The Elements of Plane Trigonometry?
You can find similar books in the "Read Also" column, or choose other free books by William P Pitt Durfee to read onlineMoreLess
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