Mark M. answered 11/01/20
Tutor
5.0
(278)
Mathematics Teacher - NCLB Highly Qualified
Use the double angle formula
cos (2(2x))
2 cos2 2x - 1
2 [(2 cos x - 1)2] - 1
Titus Jr I.
asked 11/01/20
Mark M. answered 11/01/20
Mathematics Teacher - NCLB Highly Qualified
Use the double angle formula
cos (2(2x))
2 cos2 2x - 1
2 [(2 cos x - 1)2] - 1
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