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If charges q1 and q2 separated with distance d and placed in a medium of dielectric constant K.

If alpha and beta are roots of quad 5x^2 +5x +1 then find value of (i) alpha^2 + beta^2 (ii)alpha^-1

The number of symmetric matrices of order 3 with all entries from the set {0,1,2,3,4,5,6,7,8,9}

Class 12 ex 7.3 ques 2 | Integrate sin3x cos4x

Exercise 7.3 question 1 | find integration of sin^2 ( 2x + 5 )

Find integral of 3 + 3 cosx dx / x + sinx

If alpha = cos-1(3/5) , beta = tan-1(1/3), where alpha ,beta greater 0 and les pi/2, then alpha-beta

If Ritu were younger by 5 years than what she really is, then the square of her age would have been

The curved surface area of a cone is 12320 cm². If the radius of its base is 56cm, find its height

Find the value of m so that the quadratic equation mx(5x-6) = 0 has two equal roots.

Find the value of a25 - a15 for the AP: 6, 9, 12, 15

The distance of point A (-5,6) from origin is.

If 2 sin^2 beta - cos^2 beta = 2 then find beta.

∆ABC~∆PQR. If AM and PN are altitudes of ∆ABC and ∆PQR respectively and AB²:PQ² = 4:9, then AM:PN =

The length of the diagonals of a rhombus are 24 & 32cm, then the length of the altitude of rhombus

A girl walks 200m towards East then she walks 150m towards North. Find distance of girl from startin

The value of k for which the lines 5x+7y=3 and 15x + 21y = k coincide is​

The ratio of LCM and HCF of the least composite and the least prime numbers is .

If the quadratic equation px^2 - 2 root 5 px + 15 = 0 has two equal roots then find value of p

The sum of 2nd and 7th terms of AP is 30. If its 15th term is 1 less then twice its 8th term.Find AP

If difference between the circumference and radius of a circle is 37cm, taking pi=22/7, the circum..

In fig. if angle Q=90 degree, angle R=theta, PQ= 12cm, QR= 5cm & PR=13cm find the value of cos theta

If a tower 30m high cast a shadow 10 root 3 m long on ground then find the angle of elevation of sun

What is the common difference of an A.P. in which A21 – A7 = 84