Apparent dip at a place is delta_(1). When the dip circle is rotated by 90^(@), the apparent dip becomes delta_(2). Declination a at the place (prior to 90^(@) rotation) is given by

Apparent dip at a place is delta_(1). When the dip circle is rotated b

1.	Apparent dip at a place is delta_(1). When the dip circle is rotated by 90^(@), the apparent dip becomes delta_(2). Declination a at the place (prior to 90^(@) rotation) is given by
Answer» `tan ALPHA= tan delta_(1), tan delta_(2) ` `tan alpha = tan delta_(1)//tan delta_(2) ` `tan alpha = SQRT(tan delta_(1) .tan delta_(2))` `tan alpha = tan delta_(2)//tan delta_(1)` Answer :B

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Apparent dip at a place is delta_(1). When the dip circle is rotated by 90^(@), the apparent dip becomes delta_(2). Declination a at the place (prior to 90^(@) rotation) is given by

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