
Jon S. answered 03/18/21
Tutor
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Patient and Knowledgeable Math and English Tutor
cos2x = 1/sec 2x, so if sec(2x) = 3 then cos(2x) = 1/3.
Amy C.
asked 03/18/21Jon S. answered 03/18/21
Patient and Knowledgeable Math and English Tutor
cos2x = 1/sec 2x, so if sec(2x) = 3 then cos(2x) = 1/3.
Mark M. answered 03/18/21
Mathematics Teacher - NCLB Highly Qualified
1 / 3 is the inverse of 3.
What is the inverse of secant?
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