A system of complex equations in a ti-89?

[jhonkarlos]

Homework Statement

While trying to analyze a mechanism, I find I have a complex equation that boils down to a couple of simple-looking equations with two unknowns. I'm under the impression that the ti-89 will solve this sort of set, but I'm having a huge problem figuring it out. The instruction manual isn't being very helpful. Direct help would be wonderful, so would directions to anything online.

Homework Equations

7cos(x) + 9cos(y) = -.732
7sin(x) + 9sin(y) = -1.0

The Attempt at a Solution

There's another method to do this, but it's rather tedious.

 

[Aaron Bex]

I suggest you try using the TI-89 to solve it. The instruction manual should be able to help you out, if you go through it carefully. If you still can't figure it out, there are plenty of online resources (like YouTube tutorials) that can help you understand how to use the TI-89 for this purpose. Good luck!

 

[quicknote]

I was hoping the ti-89 could handle it.

I would suggest using the built-in solver function on the ti-89 to solve this set of complex equations. This function can be accessed by pressing the "2nd" and then "SOLVE" button on the calculator. It allows you to input the equations and the unknown variables, and then provides you with the solution. If you are having trouble using this function, I would recommend seeking out online tutorials or reaching out to other ti-89 users for assistance. Additionally, you may want to double check your equations and make sure they are set up correctly before using the solver function. If you are still having trouble, you may need to use other methods such as substitution or elimination to solve the equations. Remember to always check your solutions to ensure they are valid.