trigonometry · worked example

Solve tan(45°) = 1

Method: spezieller Winkel. Verified step-by-step solution with our free AI math solver.
Problem

tan(45°)\tan(45°)

Step-by-step solution

  1. 45°45° entspricht dem gleichschenkligen rechtwinkligen 45-45-90-Dreieck.

  2. Beide Katheten sind gleich, also Gegenkathete/Ankathete = 11.

  3. Daher tan(45°)=1\tan(45°) = 1.

  4. Äquivalent dazu am Einheitskreis bei 45°45°: sin=cos=22\sin = \cos = \frac{\sqrt{2}}{2}, also tan=sin/cos=1\tan = \sin/\cos = 1.

Answer

tan(45°)=1\tan(45°) = 1

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