If x+1/x = 2 , what is principle value of sin^-1 x
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x + 1 / x = 2
x² - 2 x + 1 = 0
x = 1 is the solution
sin^-1(x) = sin^-1(1) = π/2 is the principal value
x² - 2 x + 1 = 0
x = 1 is the solution
sin^-1(x) = sin^-1(1) = π/2 is the principal value
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