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CBSE XII
>>
Math
>>
Inverse Trigonometric Functions
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Q)
Which of the following is equal to
c
o
s
3
x
?
A)
4
c
o
s
3
x
−
3
c
o
s
x
B)
4
c
o
s
3
x
+
3
c
o
s
x
C)
3
c
o
s
x
−
4
c
o
s
3
x
D)
3
c
o
s
3
x
−
4
c
o
s
x
related to an answer for:
What is the value of
3
s
i
n
A
−
4
s
i
n
3
A
?
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