Plane and Spherical TrigonometryGinn, 1901 - 209 σελίδες |
Άλλες εκδόσεις - Προβολή όλων
Plane and Spherical Trigonometry (Classic Reprint) G. A. Wentworth Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2016 |
Συχνά εμφανιζόμενοι όροι και φράσεις
absolute value acute angle altitude angle in Quadrant angle of depression angle of elevation angles less angular distance balloon base centre colog complementary angle Compute cos² cosecant cosine cotangent cotx cscx denote departure diagonals diameter diurnal motion equal equation EXERCISE Express feet find the angles Find the area Find the distance Find the height Find the sides Find the value formula Given Hence horizontal plane hour angle hypotenuse included angle isin Law of Sines Leaving latitude length logarithms longitude measured meridian miles moving radius negative object oblique triangle observed places of decimals PLANE SAILING pole positive number Prove radians ratio regular polygon right triangle secx ship sails sin² sine and cosine sinx solution star subtended tangent tower trigonometric functions unit circle vertical whence
Δημοφιλή αποσπάσματα
Σελίδα 59 - The sides of a triangle are proportional to the sines of the opposite angles.
Σελίδα 26 - Geometry that the area of a triangle is equal to one-half the product of the base by the altitude. Therefore, if a and b denote the legs of a right triangle, and F the area...
Σελίδα 79 - 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. Prove that the length of the pole is twice the height of the mound.
Σελίδα 126 - Azimuth of a point in the celestial sphere is the angle at the zenith between the meridian of the observer and the vertical circle passing through the point; it may also be regarded as the arc of the horizon intercepted between those circles.
Σελίδα 110 - RV,r — — _ — n" — * °r' ~"6. The logarithm of a power of a positive number is found by multiplying the logarithm of the number by the exponent of the power. For, Nf = (a*y = a*>.
Σελίδα 30 - From the top of a hill the angles of depression of two objects situated in the...
Σελίδα 110 - X a" = am+". .'. log. (MX N) = m + n — log. M + log. N. Similarly for the product of three or more factors. (5) The logarithm of the quotient of two positive numbers is found by subtracting the logarithm of the divisor from the logarithm of the dividend. (6) The logarithm of a power of a positive number is found by multiplying the logarithm of the number by the exponent of the power. For, N" = (oT)
Σελίδα 109 - Any positive number being selected as a base, the logarithm of any other positive number is the exponent of the power to which the base must be raised to produce the given number. Thus, if a
Σελίδα 59 - Two observers 5 miles apart on a plain, and facing each other, find that the angles of elevation of a balloon in the same vertical plane with themselves are 55° and 58°, respectively.