 Reading the scale- logarithmic  Simple scale C or D  One cycle  More complex A or B  Two cycles  SQUARES  Square root found on C/D  K scale is the cubed  Cube root is on C/D

 Use the C & D scales  Index is either end (1)  Place slider (C) index right or left opposite the value you wish to multiply [multiplier] (D)  Move the cursor to the other value [multiplicand] you are multiplying by  Result [product] is below on the (D)

 Inverse of multiplication  Using the C & D scales  Locate the divisor on D  Slide the dividend on C over the divisor  Move the cursor to the index on C  Your quotient is found below the index on D

 Since division is the inverse of multiplication  Multiplying by the reciprocal of the divisor yields the same result  Reciprocals are found in the ‘I’ scales (CI or DI)

 Set up the proportion as it is written using the C scale with the value on the top over the second value on D  Move the cursor to other given value and read the unknown  Example 7/8 = x/2

 S, T & ST scales are used  ANGLE is read on these scales the value for the fcn is on C or D  For angles ~5.7 ° and less use the ST scale  S is for sines (increases from left to right)  T is for tangents  (90- angle) then use sin scale for cos