Some things to memorize:
Degrees to Radians:
Radians to Degrees:
!! This is your best friend. You really, really need to memorize the first quadrant. !!
I will now briefly talk about periodic functions. A periodic function is a function that repeats its value in regular periods. What does that mean? It means that for every period of π, π/2, 2π, etc., the function has the same value. Here are some periodic functions to memorize:
Here’s an example (click here):
Here’s another example (click here):
Evaluating trig functions is pretty simple, but very important to know. For more practice, checkout Symbolab’s practice.
Until next time,