Feb 8, 2021
Basic trig intro. Weirdly proud of those SOH CAH TOA bubbles.
In a right triangle, we use sine, cosine, and tangent to relate the ratios of a triangle’s sides to its angles.
SOH means that sine equals the length of the side opposite from the angle divided by the length of the hypotenuse.
CAH means that cosine equals the length of the side adjacent to the angle divided by the length of the hypotenuse.
TOA mean that tangent equals the length of the side opposite from the angle divided by the length of the side adjacent to the angle.
Hint: We use these ratios for a right triangle’s acute angles only (the two non-right angles; remember: an acute angle is less than 90 degrees).
