CBSE Class 10 Answered
f x = a cos theta -b sin theta and y = a sin theta + b cos theta then prove that a square+b square = x square+y square
Asked by melmerisb | 07 Dec, 2019, 00:38: AM
f x = a cos theta -b sin theta and y = a sin theta + b cos theta
![](https://images.topperlearning.com/topper/tinymce/imagemanager/files/3b64ae5b47f096ca5f904d0397e292d25deba5b0b73809.64541115sin.jpeg)
Answered by Renu Varma | 07 Dec, 2019, 18:45: PM
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