A dip circle shows an apparent dip of `60^@` at a place where true dip is `45^@`. If dip circle is rotated through `90^@`, what apparent value of dip will it show?

A dip circle shows an apparent dip of `60^@` at a place where true dip

1.	A dip circle shows an apparent dip of `60^@` at a place where true dip is `45^@`. If dip circle is rotated through `90^@`, what apparent value of dip will it show?
Answer» Correct Answer - `51^@` Here, `delta_1=60^@`, `delta=45^@`, `delta_2=?` As `cot^2delta_1=cot^2delta_2=cot^2delta` `:. cot^2delta_2=cot^2delta-cot^2delta_1` `=(cot45^@)^2-(cot60^@)^2` `=1-(1/sqrt3)^2=2/3=067` `cot delta_2=sqrt(067)=0816` `:. delta_2=cot^-1(0816)=51^@`

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A dip circle shows an apparent dip of `60^@` at a place where true dip is `45^@`. If dip circle is rotated through `90^@`, what apparent value of dip will it show?

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