Answer:
Therefore the angle of intersection is 
Step-by-step explanation:
Angle at the intersection point of two carve is the angle of the tangents at that point.
Given,

and 
To find the tangent of a carve , we have to differentiate the carve.

The tangent at (0,0,0) is     [ since the intersection point is (0,0,0)]
 [ putting t= 0]
      [ putting t= 0]

Again,

The tangent at (0,0,0) is     
 [ putting t= 0]
        [ putting t= 0]

If θ is angle between tangent, then

 




Therefore the angle of intersection is  .
.