# Simple Inverse Tangent question

Discussion in 'Math' started by tadm123, Apr 24, 2014.

Nov 20, 2013
43
0
How can I solve for a constant when it's inside an inverse tangent?

20=Tan$^{-1}$(a/30)

Thanks.

2. ### #12 Expert

Nov 30, 2010
17,895
9,315
Spell it out in English
20 degrees is the angle you find when you take the inverse tangent of (a/30)
tan both sides of the equation
tan 20 = a/30
30 tan 20 = a
a = 10.919107

Proof:
10.919107 /30 enter
arc tan = 20

Nov 20, 2013
43
0
Thanks for the explanation

4. ### studiot AAC Fanatic!

Nov 9, 2007
5,005
519
That's a good approach if equations get to you.