I’m feeling stupid on this one, hopefully it’s easy for you guys….
If tan(x)= sin(x)/cos(x)
And tan(x)= (5√39)/39
Why isn’t cos(x)=39?
My assignment claims that cos(x)= √39/8
#simple trig question
hardy solar
fallow rivetBOT
vapid warren
I’m feeling stupid on this one, hopefully it’s easy for you guys….
If tan(x)= ...
Can you send a screenshot of the assignment?
frigid dune
Cos x can’t be more than 1
hardy solar
vapid warren
Even though the ratio of sin(x) to cos(x) is equal to (5√39)/39, it doesn't mean cos(x) is 39 since the ratio can be simplified.
vapid warren
Cos x can’t be more than 1
This is also true.
hardy solar
What can the ratio be simplified to
vapid warren
What can the ratio be simplified to
You could for example multiply top and bottom by 2, making it (10√39)/78.
It doesn't mean that cos(x) is 78 though.
frigid dune
Use the cosecant to find the sin
Then use the sin^2+cos*2=1
With the quadrant of the angle
To find cos
vapid warren
If $\csc{x}=8/5$, then $\sin{x}=5/8$. Using $1-\sin^2{x}=\cos^2{x}$, you can find $\cos{x}$, and then $\tan{x}$ is just the ratio of the two.
small iceBOT
utøpic
vapid warren
So what’s the best way to get cos(x) then?
Are you able to figure it out from here?
vapid warren
Play me on chess.com
Me?
frigid dune
Either
hardy solar
You guys have fun playing chess, I appreciate the help though, I think I got it
frigid dune
User is badnoob314159
frigid dune
Sent challenge
vapid warren
I don't see it
Oh I have to go, maybe we can play later 🙂
Can you challenge me to a daily game?
That way we have time to play
frigid dune
Ok
frigid dune
I accepted it
vapid warren
I accepted it
What grade ru in btw?
frigid dune
What grade ru in btw?
- Probably younger than most people here
vapid warren
8. Probably younger than most people here
Me too
vapid warren
What's the most advanced level of math you know?
vapid warren
For grade or younger than most
No I meant I'm in 8th grade.
frigid dune
Precalc but I read some of a calc textbook. Got to integration by parts
Did you do mathcounts?
vapid warren
Did you do mathcounts?
I didn't do it this year but I did it in previous years. This year I decided not to do mathcounts because I had a lot of stuff going on at the beginning of the year. I do not have as much going on now, but it is too late to change my decision.
frigid dune
Oh. What math r u learning?
vapid warren
Precalc but I read some of a calc textbook. Got to integration by parts
That's pretty good for 8th grade. My most advanced friend is taking calc 1. Anyways I have to sleep... good night.