anonymous
  • anonymous
Last problem I need help with! :O It's having to do with finding the identity used in the solution. Please click attached
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
hello
anonymous
  • anonymous
1 Attachment
anonymous
  • anonymous
hi :)

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anonymous
  • anonymous
okay breakdown the problem in your own words
anonymous
  • anonymous
okay let's start with tan what do we tan is broken down?
anonymous
  • anonymous
we are working backwards to get to the answer here
anonymous
  • anonymous
:/ I actually don't really know
anonymous
  • anonymous
for example tanA= sinA/cosA= SinA/sinC/TanA/ TanB see that
anonymous
  • anonymous
look at the answers given and compare to what the problem there are clues there
anonymous
  • anonymous
you still here?
anonymous
  • anonymous
Yes, sorry. I'm still here! Umm... Let me check
anonymous
  • anonymous
They all have tan though :/
anonymous
  • anonymous
yes that is the point because tan is sin/cos
anonymous
  • anonymous
Yes but how will I know which one is the answer?
anonymous
  • anonymous
and cos^-1 is 1/cos and sin-1 is 1/sin
anonymous
  • anonymous
austra I am on the track here? I am rusty so I may be leaving a step out can you help ?
Australopithecus
  • Australopithecus
Fun, look at -arccos(3/5) and arcsin(5/13) as just numbers because that is what they are so set x = arcsin(5/13 and y = -arccos(3/5) and see the identity attached
Australopithecus
  • Australopithecus
note in respect to the image x and y are theta
Australopithecus
  • Australopithecus
well theta1 and theta2 respectively
anonymous
  • anonymous
Oh I see. To me, it looks like the first option is the correct choice
Australopithecus
  • Australopithecus
this problem is just about being able to look up trig identities I dont think you will ever have to memorize these unless you go into majoring mathematics even then I doubt you would ever have to
Australopithecus
  • Australopithecus
well there are some trig identites that are important to know but this one I do not believe is used very commonly in early mathematics courses
Australopithecus
  • Australopithecus
also im sure you can derive this instead of memorizing it but idk
anonymous
  • anonymous
hey charlie I was trying to backwards with you,because sometimes it is easier that way. I don't want to mess you up so please let me know .
Australopithecus
  • Australopithecus
you are adding in that identity though charlie so it wont be the same
Australopithecus
  • Australopithecus
http://www.sosmath.com/trig/Trig5/trig5/trig5.html
anonymous
  • anonymous
@godorovg Oh, it's fine. I just didn't quite understand that way but I appreciate your help. @Australopithecus so... the third oone? I'm trying to match up
Australopithecus
  • Australopithecus
logically I would think so charlie
anonymous
  • anonymous
yes it is answer three
Australopithecus
  • Australopithecus
btw unrelated but do you love charlie day from its always sunny in Philadelphia
anonymous
  • anonymous
Thank you guys! I really appreciate your help!
Australopithecus
  • Australopithecus
or is that exclusive to all charlies
anonymous
  • anonymous
@Australopithecus Oh, no haha Charlie is my dog lol
anonymous
  • anonymous
lol funny
Australopithecus
  • Australopithecus
sorry I meant inclusive :)

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