Intersection of plane in spherical coordinate system

[foruforewer]

Dear Friends,

I have below query

Available data:
Point1 (r1,theta1,phi1)
Point2 (r2,theta2,phi2)
where in spherical coordinate system
r(i)=radius
theta(i)=angle
phi(i)=azimuth

Required output:
Line of intersection by individual planes generated by each point i.e. from point1 we got plane1 and from point2 we got plane2.

And azimuth or say angle with 0° of this line.

Please help me in this.

 

[foruforewer]

Please help me in this