If the angle between the tangents drawn to the circle x2 +y2 - 12x - 16y=0 at the points where - Maths - Circles

Question

If the angle between the tangents drawn to the circle x2 +y2 - 12x
- 16y=0 at the points where the line 5y=5x+k cut the circle is 60
then the value of k is

Ahmad · Answer

answer
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If the angle between the tangents drawn to the circle x2 +y2 - 12x - 16y=0 at the points where the line 5y=5x+k cut the circle is 60 then the value of k is