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Byju's Answer
Standard XII
Mathematics
Parametric Differentiation
Evaluate co...
Question
Evaluate
cos
9
x
−
cos
5
x
sin
17
x
−
sin
3
x
=
−
sin
2
x
cos
10
x
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Solution
Applying transformation,
−
2
sin
(
9
x
+
5
x
2
)
sin
(
9
x
−
5
x
2
)
2
cos
(
17
x
+
3
x
2
)
sin
(
17
x
−
3
x
2
)
=
−
2
sin
7
x
sin
2
x
2
cos
10
x
sin
7
x
=
−
sin
2
x
cos
10
x
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1
Similar questions
Q.
Prove
cos
9
x
−
cos
5
x
sin
17
x
−
sin
3
x
=
−
sin
2
x
cos
10
x
Q.
Prove that:
cos
9
x
−
cos
5
x
sin
17
x
−
sin
3
x
=
−
sin
2
x
cos
10
x
Q.
Prove that
(
sin
7
x
+
sin
5
x
)
+
(
sin
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x
+
sin
3
x
)
(
cos
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x
+
cos
5
x
)
+
(
cos
9
x
+
cos
3
x
)
=
tan
6
x
Q.
Evaluate :
∫
cos
3
x
+
cos
5
x
sin
2
x
+
sin
4
x
d
x
Q.
Evaluate:
lim
x
→
0
sin
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x
−
sin
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+
sin
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sin
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x
−
sin
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