# Printable Tables of Logs, Trig, Inverse Trig, and Radicals

Before the widespread use of calculators in the classroom, students computed the values of logarithmic, trigonometric, and radical functions using tables. Tables of values for elementary functions are still useful today if you want to quickly look up numbers, check patterns, or even generate pseudorandom numbers.

The printable trig and inverse trig tables are in convenient PDF form, see links below. The table of logarithms and table of radicals (square roots, cube roots, etc.) are customizable. Simply select the type of log or root, the lower and upper bounds, and the increment size, then click the button to generate a printable table.

Trig Table

Inverse Trig Table

Note: You can compute the logarithms of rational numbers, large products, and higher powers using these fundamental logarithm identities which are true for any base:

Log(a/b) = Log(a) - Log(b)

Log(a*b) = Log(a) + Log(b)

Log(a^{b}) = b*Log(a)

You can also use the change of base formula to compute logarithms in bases that are not provided in the drop-down menu. Here, "Ln" represents the logarithm in base *e*.

Change of Base Formula: Log_{x}(y) = Ln(y)/Ln(x)

For example, if you want to compute Log_{10}(4/3), use the table of base 10 logs and compute Log_{10}(4) - Log_{10}(3). If you want to compute Log_{5}(29), use the table of base *e* logs and compute Ln(29)/Ln(5).

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