In section 8-5 these are some of the things that i learned.

In section 8-5, you use identities to get to the same trig function if you can't try to make it tan or cot by sin/cos or cos/sin. You also have to see if the trig function has the same inverse or not.

These are some of the things you cant do!

1.you cant divide by a trig function when solving to cancel
2.you also cant cancel from inside the trig function

Ex. sin( squared)x- sinx= cos(squared)x

sin(squared)x- sinx= 1-sin(squared)x

2sin(squared)x- sinx-1=0

(2sin(squared)x- 2sinx)+ (sinx-1)= 0

2sinx (sinxx-1)+(sinx-1)=0

(2sinx+1) (sinx-1)=0

2sinx+1=0

x=sin(inverse)(1/2)

and that is some of the things that I learned in section 8-5