6b)
5sinx^2-3=0
sin^2x=3/5
(I messed up here; when I took the square root of both sides I didn't take the +/- square root)
sinx=+/-.77
6c)
cos2x+sinx=1
1-sin^2x+sinx-1=0
sinx(sinx+1)=0 (I messed up on the factoring here, I made it sinx(x+1))
sinx=0 sinx=-1
0,180 270
I found this unit to be difficult. I am much better at algebra than at "puzzles." If there are equations that need to be memorized and applied to different situations, I will succeed. If there is no concrete way to do it, I have a difficult time. This is not so for me in many other areas of life. In English, in history, in music, in sports...I can think "outside of the box." Math and science are weak for me, so if there is not, basically, step by step instructions I can know in my head and follow, I struggle.
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