Question 950506
"tanA 2.05030=64 degrees"


No sense.

{{{tan(anyvalue)}}} is not any "degrees".  The value would be a real number, unitless.


{{{arctan(something)=64*degrees}}}, meaningful.  The "something" is a tangent value.   This says, "the angle whose tangent is 'something' is sixty four degrees".


A scientific calculator will give you {{{tan(64)=2.0503}}}.  That can make reasonable intuitive sense.  Refer to a Unit Circle.  You know that 45 degrees in the first quadrant should have slope or tangent of 1.  An angle in quadrant 1, greater than 45 degree would have a slope greater than 1, so you might expect 64 degrees has slope about 2 or 3 or like that.


Again, using the scientific calculator, you can find {{{arctan(2.0503)=64*degrees}}}.