Question: In Exercises 1-4, verify the identity. 1. tan5 x = tan3 x sec2 x tan3 x 2. sec4 x tan2 x = (tan2 x

In Exercises 1-4, verify the identity.
1. tan5 x = tan3 x sec2 x − tan3 x
2. sec4 x tan2 x = (tan2 x + tan4 x)sec2 x
3. cos3 x sin2 x = (sin2 x − sin4 x)cos x
4. sin4 x + cos4 x = 1 − 2 cos2 x + 2 cos4 x

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