Mathematics for IGCSE & O level - Pythagoras' Theorem And Trigonometry (Section 1 - No. 35)

In trigonometry, what does the acronym SOH CAH TOA help to remember?

The names of the sides of a triangle.

The formulas for the trigonometric ratios.

The process of solving right-angled triangles.

The angles in a right-angled triangle.

SOH (Sine = Opposite/Hypotenuse), CAH (Cosine = Adjacent/Hypotenuse), TOA (Tangent = Opposite/Adjacent).