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acute angle of elevation apply base building called CHAPTER Check circle circular colog comp compute cos x cosc cosh cotangent Cotg curves decimal Dividing equal equator EXERCISES Express extending figure Find the angle Find the distance Find the height formulas Given greater Hence hill hyperbolic included increases latitude length light-house logarithm loge longitude mantissa measured miles minutes negative observed obtain opposite perpendicular plane pole positive Prove quadrant radians radius regular remaining represented Required respectively result right angle right triangle roots ship side sin x sine sinh solution solved sphere spherical triangle ABC tan x Tang tangent terminal line tower town tree TRIGONOMETRIC FUNCTIONS values written x cos yards ΙΟ بن
Σελίδα 21 - I. The sine of the middle part is equal to the product of the tangents of the adjacent parts.
Σελίδα 10 - To Divide One Number by Another, Subtract the logarithm of the divisor from the logarithm of the dividend, and obtain the antilogarithm of the difference.
Σελίδα 17 - The sine of an angle is equal to the sine of its supplement. The sine rule Consider fig.
Σελίδα 10 - Root of a Number: Divide the logarithm of the number by the index of the root ; the quotient is the logarithm of the required root of the number.
Σελίδα 10 - Hence, all numbers that differ only in the position of the decimal point have the same significant part. For example, .002103...
Σελίδα 4 - The logarithm of any power of a number is equal to the logarithm of the number multiplied by the exponent of the power.
Σελίδα 4 - The logarithm of the product of two numbers is equal to the sum of the logarithms of the numbers.
Σελίδα 15 - BCA were measured and found to be 322.55 yd., 60° 34', and 56° 10' respectively. Find the distance AB. 10. A balloon is directly over a straight level road, and between two points on the road from which it is observed. The points are 15847 ft. apart, and the angles of elevation are found to be 49° 12' and 53° 29