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Question: Calculate the direction of Earth's magnetic field.

3 components of the magnetic field:

Geographic South to North: 0.01670 mT
Geographic West to East: 0.002147 mT
Up to down (up is the sky, down is the ground): 0.03722 mT

Calculating angle East of North:

θ=7.33° East of North

Angle below horizontal:

θ=65.66° below horizontal

Is my attempt correct?

If I did the first question correctly, I need help with this question:

Compare the direction of the projection of this magnetic field vector on the horizontal
plane (the angle to the east (or west) of geographic north) with the direction of the

I honestly don't understand what they're asking here. Are they saying to compare 7.33° with the direction of the compass? How do I find the direction of the compass?

Also, one last question:

The magnetic field in anywhere between two helmholtz coils is uniform, right?

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