- #1
bwkerbow
- 2
- 0
Please note:
I am in degrees
I am remembering to include the restriction (|0<x<90)
This is the only equation I've had trouble doing on my ti89
In order to solve a problem I am plugging in the following equations:
520cos(x) = 490cos(y)
490sin(y) + 520sin(x) = 678
Doing this by hand with some Pythagorean trig identities gets me the correct answers of x = 44.0188 degrees and y = 40.2583 degrees and yet for some reason my calculator is not returning these.
Here is exactly what I am plugging in:
solve(520*cos(x) = 490*cos(y) and 490*sin(y) + 520*sin(x) = 678,x)|0<x<90
but rather than getting a value for x and y I am getting (after about a 7 second wait, pretty long)
x = 57.2958 (0.017453 * arcsin(.942308 * (sin(y)-1.38367)) + 6.28319*(@n11 + .5)) and...(insert more similar stuff here)
anyway the point is it isn't returning the correct answers that I was got (and checked) by hand and I'm not sure why.
Thank you so much in advance for your help, I'm trying to take full advantage of this calculator I am trying to learn.
I am in degrees
I am remembering to include the restriction (|0<x<90)
This is the only equation I've had trouble doing on my ti89
In order to solve a problem I am plugging in the following equations:
520cos(x) = 490cos(y)
490sin(y) + 520sin(x) = 678
Doing this by hand with some Pythagorean trig identities gets me the correct answers of x = 44.0188 degrees and y = 40.2583 degrees and yet for some reason my calculator is not returning these.
Here is exactly what I am plugging in:
solve(520*cos(x) = 490*cos(y) and 490*sin(y) + 520*sin(x) = 678,x)|0<x<90
but rather than getting a value for x and y I am getting (after about a 7 second wait, pretty long)
x = 57.2958 (0.017453 * arcsin(.942308 * (sin(y)-1.38367)) + 6.28319*(@n11 + .5)) and...(insert more similar stuff here)
anyway the point is it isn't returning the correct answers that I was got (and checked) by hand and I'm not sure why.
Thank you so much in advance for your help, I'm trying to take full advantage of this calculator I am trying to learn.