If 5 tan theta = 4 , show that ( 5...

If ` 5 tan theta = 4 ` , show that ` ( 5 sin theta - 3 cos theta)/(5 sin theta + 3 cos theta) = (1)/(7)`

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X BOARD PREVIOUS YEAR PAPER ENGLISH-CBSE BOARDS 2020-SECTION B

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Find the mean for the following distribution :
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