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

If cosx=-3/7, find the value for cos4x
asked 190k views
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If cosx=-3/7, find the value for cos4x

asked
User Danyloid
by
8.2k points

1 Answer

6 votes

Answer:

cos ( 4 x ) = - 479 / 2401

Explanation:

:D

answered
User Dwstu
by
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