What is the sin of 90 degrees, Tutoring Precalculus

We looked at coordinates and their rays from the origin and the six trigonometric functions. To do that, we used SOHCAHTOA and to remember the other three functions, you can use the word ‘chocolate’ since CHO, cscx=H/O is the reciprocal of sinx.
To visualize the ‘triangles’ for the two directions on the x-ax and the two directions on the y-axis, I’ll draw something like 85 degrees instead of 90 since it’s fairly close and then label one side of the triangle as zero and the other two as equal values (1 usually works well).