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Byju's Answer
Standard XIII
Mathematics
Trigonometric Ratios Using Right Angled Triangle
If θ=minax+1a...
Question
If
sec
θ
=
min
(
a
x
+
1
a
x
)
,
where
a
>
0
,
x
∈
R
,
then the value of
θ
A
120
∘
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B
30
∘
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C
60
∘
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D
150
∘
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Solution
The correct option is
C
60
∘
sec
θ
=
min
(
a
x
+
1
a
x
)
We know that,
a
x
+
1
a
x
≥
2
when
a
>
0
∴
min
(
a
x
+
1
a
x
)
=
2
⇒
sec
θ
=
2
⇒
θ
=
60
∘
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Trigonometric Ratios Using Right Angled Triangle
Standard XIII Mathematics
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