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Byju's Answer
Standard XII
Mathematics
Sin(A+B)Sin(A-B)
Solve: |sin ...
Question
Solve:
∣
∣
∣
sin
50
cos
40
+
csc
40
sec
50
−
4
cos
50
x
csc
40
∣
∣
∣
.
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Solution
∣
∣
∣
sin
50
∘
sin
40
∘
+
cos
e
c
40
∘
sec
50
∘
−
4
cos
50
∘
cos
e
c
40
∘
∣
∣
∣
=
∣
∣
∣
sin
50
∘
sin
(
90
∘
−
40
∘
)
+
cos
e
c
40
∘
c
o
sec
(
90
∘
−
50
∘
)
−
4
cos
50
∘
s
e
c
(
90
∘
−
40
∘
)
∣
∣
∣
=
∣
∣
∣
sin
50
∘
sin
50
∘
+
cos
e
c
40
∘
c
o
sec
40
∘
−
4
cos
50
∘
s
e
c
50
∘
∣
∣
∣
=
∣
∣
1
+
1
−
4
×
1
∣
∣
=
∣
∣
2
−
4
∣
∣
=
∣
∣
−
2
∣
∣
=
2
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Q.
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Sin(A+B)Sin(A-B)
Standard XII Mathematics
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