Math, asked by DhineshKailash7, 22 days ago

Prove That cos $x^{2}$ x-sin $x^{2}$ x= 2cos $x^{2}$ x-1

Answers

Answered by sandy1816

2

Step-by-step explanation:

cos²x-sin²x

=cos²x-1+cos²x

=2cos²x-1

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