Discuss: Equations That Are Not Identities How can youtell if an equation is not an

Chapter 7, Problem 115

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Discuss: Equations That Are Not Identities How can youtell if an equation is not an identity? Show that the followingequations are not identities.(a) sin 2x 2 sin x(b) sin1x y2 sin x sin y(c) sec2x csc2x 1(d)1sin x cos x csc x sec x

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