A dip circle is so set that the dip - needle moves freely in the magnetic meridian. In this position, the angle of dip is 39°. Now the dip circle is rotated so that the plane in which the needle moves makes an angle of 30° with the magnetic meridian. In this position, the needle will dip by an angle
(a) exactly 39°
(b) 30°
(c) more than 39°
(d) less than 39°
