How can I solve for a constant when it's inside an inverse tangent?

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


Thanks.

 

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

 

Thanks for the explanation

 

Spell it out in English

That's a good approach if equations get to you.