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Byju's Answer
Standard XII
Mathematics
Complex Numbers
The value of ...
Question
The value of
sin
(
90
−
θ
)
.
cos
θ
+
sin
θ
.
cos
(
90
−
θ
)
is :
A
0
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B
1
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C
2
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D
None of these
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Solution
The correct option is
B
1
The value of
sin
(
90
o
−
θ
)
.
cos
θ
+
sin
θ
.
cos
(
90
o
−
θ
)
is
=
cos
θ
.
cos
θ
+
sin
θ
.
sin
θ
=
cos
2
θ
+
sin
2
θ
=
1
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0
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