2 years ago

If cosx=-3/7, find the value for cos4x

Mathematics

1 answer:

charle [14.2K]2 years ago

6 0

Answer:

cos ( 4 x ) = - 479 / 2401

Step-by-step explanation:

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creativ13 [48]

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Step-by-step explanation:

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Step-by-step explanation:

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