Math, asked by BilluGautam, 1 year ago

tell me some important quetion of 10 th class cbse board. for examination 2018

Answers

Answered by Anonymous

1

some important question for class 10 in mathematics are
2cosQ-sinQ=x
cosQ-3sinQ=y
then prove that
$2x {}^{2} + y { }^{2} - 2xy$

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