How do you find the value for #arctan(1)#?

1 Answer
MeneerNask
Jul 2, 2015

It would be #45^o# or #pi/4rad#

Explanation:

#arctan(1)# means: find the angle that belongs to a ratio of opposite side divided by adjoining side (in a rectangular triangle) of #1#.
Or in other words: where the opposite and adjoining sides are equal.
This only happens in an isosceles rectangular triangle, where both other angles are one half of a right angle, i.e. #45^o# or #pi/4rad#

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