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JEEMAIN and NEET
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NEET PAST PAPERS
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2017
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Q)
If
θ
1
and
θ
2
, be the apparent angles of dip observed in two vertical planes at right angles to each other, then the true angle of dip 0 is given by :
(
1
)
cot
2
θ
=
cot
2
θ
1
+
cot
2
θ
2
(
2
)
tan
2
θ
=
tan
2
θ
1
+
tan
2
θ
2
(
3
)
cot
2
θ
=
cot
2
θ
1
−
cot
2
θ
2
(
4
)
tan
2
θ
=
tan
2
θ
1
−
tan
2
θ
2
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