How do you evaluate #tan W = 19.0811#?

1 Answer
EZ as pi
Aug 9, 2016

W = #tan^-1(1900811) = 86.99999 = 87.00°#

Explanation:

The question being asked here is.
"Which angle, called W, has a tan value of 19.0811?"

The process of finding the angle from a known tan ratio is called arctan

This can be found from using tables, or on a calculator using the shift/alt/2nd function key and then the #tan^-1# key.

Note that this does NOT mean #1/(tan theta)#

W = #tan^-1(1900811) = 86.99999 = 87.00°#

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