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Byju's Answer
Standard XII
Mathematics
Composite Function
Prove that si...
Question
Prove that sin 3x * sin cube x + cos 3 X * cos cube x = cos cube 2x
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Similar questions
Q.
Prove
sin
3
x
sin
3
x
+
cos
3
x
cos
3
x
=
cos
3
2
x
.
Q.
Prove that
sin
x
+
sin
3
x
cos
x
+
cos
3
x
=
tan
2
x
Q.
Prove that the general solution of
sin
x
−
3
sin
2
x
+
sin
3
x
=
cos
x
−
3
cos
2
x
+
cos
3
x
is
n
π
/
2
+
π
/
8
.
Q.
Prove that:
sin
3
x
+
sin
2
x
−
sin
x
=
4
sin
x
cos
x
2
,
cos
3
x
2
.
Q.
Prove that
sin
x
+
sin
3
x
+
sin
5
x
+
sin
7
x
=
4
cos
x
cos
2
x
sin
4
x
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