## Five-place Logarithmic and Trigonometric Tables |

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008 log cot 1f the number adjacent mantissas angle corresponding angles between 89 arithm chains circular measure colog cot complementary angles corresponding numbers cot tan cot decimal point Distance 9 Find log Find the angle Find the cologarithm Find the number found by adding four figures function is increasing G. A. WENTWORTH given logarithm given mantissa given number hence log integral number interpolation latitude and departure log 008 log log ain log cos 47 log cos 88 log cot log log cot x log N log log oos tt log sin tt log tan 70 log tan 89 log tan log mantissa for 1576 mantissa for 3267 mantissa for 3423 multiple natural numbers nearest log number corresponding number is found o t Bearing o t Lat oos log cot oos t g oot in log oot log 008 oot log oos proper fraction Quadrant required number significant figures unit in circular

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Page iv - If the number is less than 1, make the characteristic of the logarithm negative, and one unit more than the number of zeros between the decimal point and the first significant figure of the given number.

Page iv - If the number is between 0.1 and 0.01, the logarithm is between —1 and —2. If the number is between 0.01 and 0.001, the logarithm is between —2 and —3. And so on. 7. If the number is less than 1, the logarithm is negative (§ 6), but is written in such a form that the fractional part is always positive. For the number may be regarded as the product of two factors, one of which lies between 1 and 10, and the other is a negative power of 10 ; the logarithm will then take the form of a difference...

Page iii - The logarithm of a power of a number is found by multiplying the logarithm of the number by the exponent of the power. For, AŤ = (10°)

Page iii - A* = on = n log A . 5. The logarithm of the root of a number is found by dividing the logarithm of the number by the index of the root. For, = \fio