Answer:
1
Step-by-step explanation:
i (a + bi) = 1
ai + b(-1) = 1
ai − b = 1
Match the coefficients.
ai = 0
-b = 1
Therefore, a = 0 and b = -1.
So a − b = 0 − (-1) = 1.
cos 0 = 1/6
1 - cos²0 = sin²0
sin²0 = 35/36
in quadrant IV (4) the cos is positive sin is negative.
sin0 = - √35/6
