Show that the equation of the line having slope m making x intercept d is given by y=m(xy-d) .Find the y intercept of the line
as 2n is even the middle term of the expansion (1+x)to the power of 2n is ( 2n/2+1)
The angle of elevation of an airplane from a point on the ground is 600
. After a flight of
30 seconds, the angle of elevation becomes 300
. If the airplane is flying at a constant
height of 3000√3 m, find the speed of the airplane.
The radii of two circle are 12 and 16 respectively. Find the radius of a circle whose area is equal to the sum of the area of the two circle?