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Trig ratios and cofunctionTechnique

Technique

Trig ratios and cofunction

Stand at the angle, then name every side

3 min 3 steps

Opposite and adjacent change depending on where you stand. I learned that about hallways long before I learned it about triangles.

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The first step is free. A free account opens the rest.

Calls on

SOH-CAH-TOA and complementary anglesFactName the sides from the angle, then swap at 90

Used by

Pythagorean theorem and trig ratiosTacticTurn one ratio and one side into the whole triangle
Trig relationships beyond one triangleTacticSwap at the complement, strip the full turns