we learned alot this week in a short period of time. we learned all of chapter 11 and we jumped into chapter 13 which i was very mad about, but hopefully chapter 13 will be easy like chapter 11. we learned polar in chapter 11 and it was pretty much all the same work but it built off of section 1. it was a easy chapter if you knew your formulas like always :/ we also learned how to plot points in polar and we also learned how to do stuff in rectangular.
formulas:
x=r cos theta y= r sin theta > convert to rectangular
r= square root of x squared+ y squared then take the inverse of tan
ex.1
give the polar point for (3,4)
r= square root of 3saquared+ 4squared= 5
inverse of tan= 53.130
then you add 180
you get 5, 53.130
5, 233.130
ex.2
give the rectangular coordinates for(-1,45)
x= -1cos45= -square root of2/2
y= -1sin 45= -square root of2/2
answer is -square rootof 2/2, -square root of2/2
i hope this helped people out that didnt know how to do this. if you need help let me know. i can help you with chapter 11.
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