Math, asked by akramaky64, 5 months ago

What is the value of cos4x?

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Answered by cutebrainlystar

1

Step-by-step explanation:

hey friend the formula of cos4x is. = cos(2x)cos(2x) - sin(2x)sin(2x) = cos^2(2x) - sin^2(2x) = cos^2(2x) - (1 - cos^2(2x)) = 2cos^2(2x) - 1.

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Answered by anshikak0214

1

Answer:

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