Find to three decimal places, the coordinate of point P lying in the 4th quadrant on the Cartesian plan such that the line tangent to the cosine function passes through the origin. X:[0,2Pi] Show all work and describe all steps. Solution t = cos x tangent passing through origin t\' = -sin x So, tangent y = mx+c y = -xsinx+c here, (0,0) is point on tangent, 0 = -0sin0 + c c = 0 So, y = -xsinx is tangent..