The acute angle between the line3x−4y=5 and the circlex2+y2−4x+2y−4=0 is θ Then 9 cosθ =

θ is the angle between the tangent and the lineThe circle has center (2,-1) and radius 3.The length of perpendicular from the center on3x−4y=5 isp=6+4−55=1or sin⁡(90−θ)=13or cos⁡θ=13