Tan 510 Degrees: Exact Value, Unit Circle And Examples
Read ArticleTan 75 Degrees: Exact Value, Proofs And Worked Examples
Tan 75 degrees equals 2 + √3, about 3.7321, found from tan(45^° + 30^°). Below: six proofs, a tangent table, why the value tops 3, worked examples and the calculator trap.
Read moreTan 70 Degrees: Value 2.7475, Methods and Examples
Tan 70 degrees is about 2.7475, and it equals cot 20 degrees. It has no simple surd form; this page covers the methods, the identities exam questions use and six worked examples.
Read moreTan 65 Degrees: Value 2.1445, Exact Form and Examples
Tan 65 degrees is about 2.1445, the same number as cot 25^°. It has no neat surd form, so this guide shows how to compute it, check it and use it.
Read moreTan 37 Degrees: Value, 3-4-5 Approximation And Examples
Tan 37 degrees is about 0.7536 and has no simple exact form. The popular 3/4 is a close approximation from the 3-4-5 triangle; methods, error size and examples follow.
Read moreTan 23 Degrees: Value, Unit Circle, Methods And Examples
Tan 23 degrees ≈ 0.4245 (0.4244748162 to ten places), with no simple surd form. See the unit circle, series and co-function methods, a neighbour table, six examples and the radian-mode trap.
Read moreTan 6 Degrees: Value, Exact Form, Approximations And Examples
Tan 6 degrees ≈ 0.1051 (more precisely 0.1051042353). An exact surd exists because 6^° = 36^° - 30^°, but it is long, so this guide derives it, then gives quicker checks and examples.
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