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9 t log adjacent mantissas angle corresponding angles between 89 chains circular measure colog cot corresponding numbers cos log cot cos sin cos cot log oos 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 decreasing given logarithm given mantissa given number hence log integral number interpolation latitude and departure lf log lf the given log 008 log log cos 47 log cos 69 log COS tt log cot log log N log log sin tt log tan 70 log tan 89 log tan log mantissa for 1576 mantissa for 3267 mantissa for 3423 multiple nearest log number corresponding o t Dep oos log oot oos t 9 oot log 008 oot log tan Quadrant required number sin cos sin sin log tan tan cot tan tan log cot tt log unit in circular
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 iv - If the number is greater than 1, make the characteristic of the logarithm one unit less than the number of figures on the left of the decimal point. If the number is less than 1, make the characteristic of the...