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BB_1410064610-Marble
10-Marble
Oct 7, 2025 6:02 PM UTC
Solved

Solve variable inside of trig equation?

I'm using MathCAD 9.0.0.0. How can I use MathCAD to solve for theta? Below is the screen capture of what I have written so far. Attached is my MathCAD file.

BB_14100646_0-1759859870063.png

 

Thanks,

        Brent

 

terryhendicott
terryhendicottAnswer
21-Topaz II
Oct 8, 2025 5:13 AM UTC

Hi Brent.

You could do it this way:-

Capture.JPG

Prime 9 worksheet enclosed

Cheers

Terry

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2 replies

Werner_E
Werner_E25-Diamond I
25-Diamond I
Oct 7, 2025 8:35 PM UTC

To input an equation you hat to use the Boolean/comparison equal.

 

To get the desired solution I would suggest that you use one of Primes numeric methods.

You can use the "root" function by providing the interval from 0 to pi

Werner_E_0-1759869042652.png

Or you can use the "root" function by providing an appropriate guess value

Werner_E_1-1759869098417.png

Another option is using a solve block with "find". Its ugly looking and takes up much space, but here you have the option to add additional constraints

Werner_E_2-1759869170676.png

 

You may also use the symbolic engine with "solve", but as you are just looking for a numeric value I would not suggest doing so.

Werner_E_3-1759869257840.png

Prime 9 sheet attached

 

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    terryhendicott
    terryhendicott21-Topaz IIAnswer
    21-Topaz II
    Oct 8, 2025 5:13 AM UTC

    Hi Brent.

    You could do it this way:-

    Capture.JPG

    Prime 9 worksheet enclosed

    Cheers

    Terry

    Translate
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