Trigonometric EquationHard
Question
The most general values of x for which sin x + cos x = 
{1, a2 − 4a + 6} are given by -
{1, a2 − 4a + 6} are given by -Options
A.2nπ
B.2nπ + 
C.nπ + (−1)n . 
−
−D.None of these
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