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NDA · Maths · Height & Distance
NDA Height & Distance — Formulas 2
Question
1
of 13
1.
When the sun's elevation changes from
θ
1
\theta_1
θ
1
to
θ
2
\theta_2
θ
2
, which gives the change in a height-
h
h
h
object's shadow length?
A
Δ
s
=
h
(
tan
θ
2
−
tan
θ
1
)
\Delta s = h(\tan\theta_2 - \tan\theta_1)
Δ
s
=
h
(
tan
θ
2
−
tan
θ
1
)
B
Δ
s
=
h
(
cot
θ
2
−
cot
θ
1
)
\Delta s = h(\cot\theta_2 - \cot\theta_1)
Δ
s
=
h
(
cot
θ
2
−
cot
θ
1
)
C
Δ
s
=
h
(
cot
θ
1
−
cot
θ
2
)
\Delta s = h(\cot\theta_1 - \cot\theta_2)
Δ
s
=
h
(
cot
θ
1
−
cot
θ
2
)
D
Δ
s
=
cot
θ
2
−
cot
θ
1
h
\Delta s = \dfrac{\cot\theta_2 - \cot\theta_1}{h}
Δ
s
=
h
cot
θ
2
−
cot
θ
1
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