[Feedback] Trigonometric tan

[Feedback] Trigonometric tan

Zoho creator is very nice base.
I would get out trigonometric tan of 12.25 degrees. and the formula grad.tan () the correct sum is 0.198912367 but for the wrong numbers -3.84524352604626 come up. Maybe I m gain entry angle = Deg.
But how?

best regards
Veli Orre