Solve a quadratic with trigonometric values in degrees

01282020, 05:16 AM
Post: #7




RE: Solve a quadratic with trigonometric values in degrees
The past replies are pointing you in the right direction. The equation solver is the best tool for the job on the 50g because your problem is asking for a numerical answer. If the equation solver doesn't work or spits out an error, enter a guess for the variable you are solving for and try again. It will find the answer closest to that guess.
However... You can use SOLVE, SOLVEVX, & ZEROS to find the solutions as well. These functions are known as CAS (computer algebraic system) functions. Typically, to use CAS functions...
In order to understand the above, here are the steps used to solve your problem d*cos(30) = 25*sqrt(d/9.81) with the SOLVE command. I am assuming you are in RPN mode.
A lot of work huh! This really shows that the equation solver is the best tool for the job. This calculator is hard to learn BUT once you get it, you'll cut through problems like a hot knife through butter. If you have questions, let me know. 

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