If
sin
(
x
−
π
2
)
=
A
cos
x
\displaystyle {\sin{{\left({x}-{\frac{{\pi}}{{{2}}}}\right)}}}={A}{\cos{{x}}}
sin
(
x
−
2
π
)
=
A
cos
x
, then
the number
A
=
\displaystyle {A}=
A
=
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Question 6
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Enter DNE for Does Not Exist, oo for Infinity