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Byju's Answer
Standard X
Mathematics
Standard Values of Trigonometric Ratios
The maximum v...
Question
The maximum value of
cos
x
(
cos
x
1
−
sin
x
+
1
−
sin
x
cos
x
)
is
A
4
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B
3
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C
2
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D
1
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Solution
The correct option is
C
2
f
(
x
)
=
cos
x
(
cos
2
x
+
1
+
sin
2
x
−
2
sin
x
cos
x
(
1
−
sin
x
)
)
=
cos
x
(
2
(
1
−
sin
x
)
cos
x
(
1
−
sin
x
)
)
=
cos
x
(
2
cos
x
)
=
2
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