The voltage e at any instant in a coil of wire that is turning in a magnetic field is given by e E cos, where E is the maximum voltage and is the angle the coil makes with the field Find the acute angle if e 56 9V and E 339V

Question: The voltage e at any instant in a coil of wire that is turning in a magnetic field is given by e = E cos,

The voltage e at any instant in a coil of wire that is turning in a magnetic field is given by e = E cosα, where E is the maximum voltage and α is the angle the coil makes with the field. Find the acute angle α if e = 56.9V and E = 339V.

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