1 Circles
If θ is the angle between the tangents from (-1, 0) to the circle x2 + y2 - 5x + 4y = 0, then θ is equal to
1) 2 tan-1 (7/4) 2) tan-1(7/4) 3) 2 cot-1(7/4) 4) cot-1(7/4)
SOLUTION
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