Welcome to class everyone! In today's class we are going to learn about SOHCAHTOA. Can anyone tell me what SOHCAHTOA stands for?
Yes Andrea?
SOHCAHTOA is an abbreviation that stands for sin opposite and hypotenuse.
Cos adjacent and hypotenuse. And tan opposite and adjacent.
Sin is the ratio of opposite and the hypotenuse. Cos the ratio of adjacent and the hypotenuse. And tan is the ratio of the opposite and the adjacent.
Sine, cosine, and tangent, also called Sin, Cos, and Tan, are ratios to determine the lengths of the right-angle triangle.
The three sides of a triangle are the hypotenuse, the opposite and the adjacent side.
Excellent job Andrea! That is correct. Now I know that was a lot of information so lets tackle it one by one.
If your reference angle was the angle that the arrow is pointing at then the number 3 would be your adjacent side and number 2 would be your opposite side. And vice versa.
Side number 1 is the hypotenuse because it is the longest side.
The adjacent side and the opposite side will change depending on the reference angle.
But how do we know which one is the reference angle?
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