Helping students gain understanding and self-confidence in algebra.
bikeman wrote:i am asked two similar problems. my question is how it was done as the example in the book i am reading is useless in explaining.
the first question is:
the example plays out to what i assume is factoring sint+cost out of it to look like (sint+cost)(sin^2t-sint cost+cos^2)/(sint+cost)
my question is, where did the "sin^2t-sint cost+cos^2" come from? when i factor it it doesnt look like that.
the next problem is (cos^4t-sin^4t)/(cos[2t]) how do i get rid of the ^4?
thanks for any help provided.