What is 1-tan^2(x)
I need to know how to simplify this expression
2 Answers By Expert Tutors
Expert Help in Algebra/Trig/(Pre)calculus to Guarantee Success in 2018
1-tan^2(x) = 1 - (sin2x)/(cos2x) = [cos2x - sin2x]/cos2x = [cos 2x]/cos2x is a posibly 'simplified' version in that it has been boiled down to only cosines.
Mathematics Teacher - NCLB Highly Qualified
1 + tan2 = sec2x note the positive sign
The given expression does not have a simplification.
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