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2sinxcosx

Check my new answer

How? Is there an explanation for this

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sin(2x) = sin(x+x)

from sin(a+b)= sin(a).cos(b)+cos(a).sin(b)

sin(x + x) = sin(x).cos(x) + cos(x).sin(x)

= sin(x).cos(x) + sin(x).cos(x)

= 2sin(x)cos(x)

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