#1**+5 **

Arctan is the same as inverse tan.

You use it to find an angle.

More info here.

http://www.mathsisfun.com/algebra/trig-inverse-sin-cos-tan.html

Melody
Mar 1, 2017

#1**+5 **

Best Answer

Arctan is the same as inverse tan.

You use it to find an angle.

More info here.

http://www.mathsisfun.com/algebra/trig-inverse-sin-cos-tan.html

Melody
Mar 1, 2017

#2**+5 **

Arctan x means 'the angle whose tangent is x' As does arcsinx means 'the angle whose sine is x'. When you see arctan,arcsin,arccos, you are looking at expressions for angles. - Here's a handy thing to know: --

If you know that arctan x = 1/2 ,for example,you can draw the right-angled triangle with opposite side length 1,adjacent side 2 and find all sides and angles. As you can if you were given similar expressions for arcsin etc.

Guest Mar 1, 2017