New Plane and Spherical Trigonometry, Surveying, and NavigationGinn, 1903 - 390 σελίδες |
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Άλλες εκδόσεις - Προβολή όλων
New Plane and Spherical Trigonometry, Surveying, and Navigation George Albert Wentworth Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2018 |
Συχνά εμφανιζόμενοι όροι και φράσεις
angle less angle of elevation chains circle civil date 1895 colog sin Compass course cos(x cos² cos²x cos³ cosine course and distance Dist Equation feet find the angles Find the area Find the distance find the latitude Find the values Formulas Given civil date Greenwich mean Hence Index cor index correction isosceles triangle Leeway log a colog log AC log area log clog log cos log cot log csc log diff log F log h log R2 log sec Lm log sin log tan log tanc loge longitude meridian altitude miles O's dec Observed altitude observed meridian altitude Parallax Prob Prove Quadrant radians radius Refraction right triangle sec² Semi-diam sides sin x cos sin² sin²x sine tan x tan² tan2x True course Variation and deviation x cos x λα
Δημοφιλή αποσπάσματα
Σελίδα 40 - A ladder 40 feet long may be so placed that it will reach a window 33 feet high on one side of the street, and by turning it over without moving its foot it will reach a window 21 feet high on the other side. Find the breadth of the street. 63. From the top of a hill the angles of depression of two successive milestones, on a straight level road leading to the hill, are observed to be 5° and 15°.
Σελίδα 71 - EXERCI8E XII. 1. What do the formulas of § 36 become when one of the angles is a right angle ? 2. Prove by means of the Law of Sines that the bisector of an angle of a triangle divides the opposite side into parts proportional to the adjacent sides.
Σελίδα 111 - A pole is fixed on the top of a mound, and the angles of elevation of the top and the bottom of the pole are 60° and 30° respectively.
Σελίδα 123 - Two towers on a horizontal plain are 120 ft. apart. A person standing successively at their bases observes that the angle of elevation of one is double that of the other ; but when he is halfway between the towers, the angles of elevation are complementary.
Σελίδα 154 - Prove that sin (a; + y + z) = sin x cos y cos z + cos x sin y cos z + cos x cos y sin z — sin x sin y sin z.