Mathematics

Sheldon Butler

28 June, 17:44

Which of the following is not an identity?

A. 2sin^2-X - Sinx=1

O B. sin^2x + tan²x + cos^2x = sec^2x

O C. 2cos^2x-1 = 1 - 2 sin²x

O D. secx cscx (tanx + cotx) = sec^2x + csc^2x

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