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Mathematics
Problem
A line makes angles
α
,
β
,
γ
\alpha, \beta, \gamma
α
,
β
,
γ
with the co-ordinate axes. If
α
+
β
=
90
∘
\alpha + \beta = 90^\circ
α
+
β
=
9
0
∘
, then
γ
=
\gamma =
γ
=
(a) 0 (b)
90
∘
90^\circ
9
0
∘
(c)
180
∘
180^\circ
18
0
∘
(d) None of these
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