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Byju's Answer
Standard XII
Mathematics
Integration by Partial Fractions
If A+B+C=π,...
Question
If
A
+
B
+
C
=
π
, then
cos
A
sin
B
sin
C
+
cos
B
sin
C
sin
A
+
cos
C
sin
A
sin
B
=
1
. If this is true enter 1, else enter 0.
Open in App
Solution
A
+
B
+
C
=
π
cos
A
sin
B
sin
C
+
cos
B
sin
C
sin
A
+
cos
C
sin
A
sin
B
=
cos
A
sin
B
sin
C
+
sin
A
cos
B
sin
C
+
sin
a
sin
B
cos
C
sin
A
sin
B
sin
C
=
cos
A
cos
B
cos
C
−
cos
(
A
+
B
+
C
)
sin
A
sin
B
sin
C
=
cos
A
cos
B
cos
C
+
1
sin
A
sin
B
sin
C
=
cot
A
cot
B
cot
C
+
csc
A
csc
B
csc
C
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0
Similar questions
Q.
If
A
+
B
+
C
=
π
. The value
cos
A
sin
B
sin
C
+
cos
B
sin
C
sin
A
+
cos
C
sin
A
sin
B
is equal to
Q.
cos
A
sin
B
sin
C
+
cos
B
sin
C
sin
A
+
cos
C
sin
A
sin
B
=
2
.
Q.
If
A
=
B
=
45
0
, then
cos
(
A
+
B
)
=
cos
A
cos
B
−
sin
A
sin
B
If true enter 1 else 0
Q.
In a triangle
A
B
C
, the value of
cos
A
sin
B
sin
C
+
cos
B
sin
C
sin
A
+
cos
C
sin
A
sin
B
Q.
Given
A
=
60
0
and
B
=
30
0
, then
cos
(
A
+
B
)
=
cos
A
cos
B
−
sin
A
sin
B
.
If above statement is true enter
1
else
0.
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