Question 1182840
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1.  sin^-1(-1)  = {{{3pi/2 + 2k*pi}}},  k = any integer number = 0, +/- 1, +/- 2, . . .      <U>ANSWER</U>


2. tan^-1(-1)   = {{{3pi/4 + k*pi}}},   k = any integer number = 0, +/- 1, +/- 2, . . .      <U>ANSWER</U>
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Solved and answered.