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|dw:1349291754923:dw| @hartnn this is the other problem.
write cos A - sin A as - (sin A-cos A)
i asked u to write cos A - sin A as - (sin A-cos A) u have written cos A - sin A as - (cos A + sin A) ..... -.- ....
oh. haha. im sorry im very bad at this. im more of a visual learner. just a moment let me fix this.
wait, i just realized, were talking about the far left fraction right?
oka. let me try now
i asked u to write cos A - sin A as - (sin A-cos A) u have written cos A - sin A as - (sin A +cos A) ..... -.- ....
but how is that possible that its a - cos A ? I dont see it
- (sin A-cos A) = -sin A -(-cos A) = -sin A +cos A = cos A -sin A
ok , lets forget everything, lets go another way. can u separate out the denominator ?
like (a+b)/c = a/c + b/ c
i think i can, but it would be in 4 sections right? like sin A / Sin A - cos A/sinA + cos A/cos A -sinA/cos A
absolutely correct! whats sin A/ sin A =? and cos A/cos A = ?
there going to equal 1
so u got 2 right ?
what? well if u add them 1 + 1 = that makes 2
yes. now u are left with -cos A/sinA -sinA/cos A cross multiply again, same as previous problem
which is ?
which is 1
-(sin^2x + cos^2 x) = -1
oh shoot. thats right... okay because it was a negative the answer will be negative too.
okay i got the same answer too
what was left in the denominator
Okay this is what i have so far. I like to put things in steps.
|dw:1349294146174:dw| see this.
makes sense ?
ya i see it, i under stand it but just forgot where the 2 came from. it came from the 2 fractions that crossed each other out right?
it came from sinx/sin x + cosx / cos x = 1+1 = 2
okay, ya thats what i thought :)
now how can we get rid of that - 1 ?
|dw:1349294542963:dw| what is 1/sin a and 1/ cos a ?
the 1/ sin a = the inverse of cos. that is csc and 1/ cos a = is the inverse of sine sec
|dw:1349294713780:dw| got it ?
i got it..............man WHAT THE HEY?! why is this so complicating?!
do u have any advice for me to kind of remember what to do. Because I know what the inverse fractions look like and everything I just get stuck all the time.
3 tips: 1. practice. 2. more practice. 3. more and more practice. want 4th ? :P
really?!......I try doing more homework problems as practice and i get more confused. then i go to tutoring at school. ugH?! math hates my brain
have patience, you will understand someday. else i will be there to help u.
okay then. Thank you for helping me out. Im going to work on english. Have a good day.
think positive, think u like math. u also have a good day, i will have good night :)