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Mathematics
Mathematics
Problem
The number of integral value of
k
k
k
for which the equation
7
cos
x
+
5
sin
x
=
2
k
+
1
7 \cos x + 5 \sin x = 2k + 1
7
cos
x
+
5
sin
x
=
2
k
+
1
has a solution is a. 4 b. 8 c. 10 d. 12
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