If an=9-5n forms an A.P, then find its first term, common difference and sum of its n terms.
If an=9-5n forms an A.P, then find its first term, common difference and sum of its n terms.
If an=9-5n forms an A.P, then find its first term, common difference and sum of its n terms.
In an equilateral triangle abc d is a point on side bc such that 1/3 bc prove that 9 ad2 =7ab2