Question: In Exercises 1-4, write an algebraic expression that is equivalent to the given expression. 1. cos(arcsin 2x) 2. sin(arctan x) 3. cot(arctan x) 4. sec(arctan

In Exercises 1-4, write an algebraic expression that is equivalent to the given expression.
1. cos(arcsin 2x)
2. sin(arctan x)
3. cot(arctan x)
4. sec(arctan 3x)

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