# Wednesday, May 24

Students took the Similarity test (chapter 11) on Friday. This week we have learned the right-triangle definition of the trigonometric functions sine, cosine and tangent. As of now these functions take as input one of the non-right angles in a right triangle and their output is a specific ratio of sides in all such similar right triangles.

So, based on this definition, if $\dpi{300}\inline \sin(35^\circ) \approx .57$ that means that in any right triangle with a $\dpi{300}\inline 35^\circ$ angle, the ratio of $\dpi{300}\inline \dfrac{\text{opposite side}}{\text{adjacent side}}$ is approximately .57. In the figure below this means that $\dpi{300}\inline \dfrac{AC}{BC} \approx .57$.

Assignments

Monday: No HW

Tuesday: 12.1 on p. 620-624: 4-9, 14-22, 27

Wednesday

1. "Understanding sine/cosine/tangent and their inverses" w/s

2. (3rd Period) 12.1 worksheet

2. (5th Period) 12.2 worksheet