Elaine has a piece of wire that is 2.16 years long.mallory has a piece of wire that is 2.061 m long. Who’s piece of wire is long
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now, as far as the second case....well, sine of anything is within the range of -1 or 1, so -1 < sin(A) < 1
now, we have -2 = sin(A), which simply is out of range for a valid sine, so there's no angle with such sine
so, only the first case are the valid angles for A