HP-41 RPN program solution sought - test problem

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(10-27-2021 08:03 PM)Gene Wrote:  What's the best (shortest meant here) way you can devise to program a solution to this problem in HP-41 RPN?


Enter an angle in degrees mode and press A to return the answer.

So start with LBL A and evaluate:

Equation T = ...

What can you come up with ?

Gene

First I draw it in my preferred graphical calculator https://www.desmos.com/calculator/pop31xijnj?lang=de
And in the time I was drawing (took 5min), smarter ones has give to you some solutions.
I was not quick enough ;-)