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## Homework Statement

**p**1 and

**p**2 are (perfect) dipoles a distance r apart (Their alignment is such that

**p**1 is perpendicular to the line separating them (pointing upwards) and

**p**2 is parallel to the line separating them (pointing away from

**p**1).)

What is Field of

**p**1 at

**p**2, and the Field of

**p**2 at

**p**1?

## Homework Equations

**E**

_{dip}(

*r,θ*) = p/(4πε

_{0}r

^{3}) * (2cosθ

**r**+ sinθ

**θ)**

## The Attempt at a Solution

I actually have the official solution for this, but I don't understand it... The theta value in the solution uses theta = π/2 for the field of

**p**1 at

**p**2, but a value of theta = π, for the equation for

**p**2 at

**p**1.. And

**I dont see where either of these theta values are coming from**(my spherical coordinates are very weak, and I suspect that's the real problem here.)

Thanks