https://www.vedantu.com/question-answer/if-the-chord-ymx+c-subtends-a-right-angle-at-the-class-11-maths-cbse-5f7466485868584186c4b55a
If the chord ymx+c subtends a right angle at the vertex of the parabola y24ax then the value of c is A 4am B 4am C 2am D 2am
right anglechordymxsubtends