Thank you for registering.

One of our academic counsellors will contact you within 1 working day.

Please check your email for login details.
MY CART (5)

Use Coupon: CART20 and get 20% off on all online Study Material

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: Rs.

There are no items in this cart.
Continue Shopping

the length of a chord of the parabola x^2=4ay passing through the vertex and having slope tanA is?

the length of a chord of the parabola x^2=4ay passing through the vertex and having slope tanA is?

Grade:12

2 Answers

Revant Buch
19 Points
7 years ago
let a point on parabola be 2at,at^2. its vertex is the origin. the slope of chord is given by (at^2-0)/(2at-0)=tanA, implies t=2*tanA. length of chord is the distance between origin and the point of intersection i.e sq.root({at^2}^2+{2at}^2). substitute value of t to get answer to be 4asecAtanA.
anusha
12 Points
7 years ago
a particle of mass 1 kg and carrying 0.01C is at rest on a inclined plane of angle 30 degrees with the horizontal when an electric field of 490/sq root(3) N/C applied parallel to the horizontal,the coefficient of friction is?

Think You Can Provide A Better Answer ?

Provide a better Answer & Earn Cool Goodies See our forum point policy

ASK QUESTION

Get your questions answered by the expert for free