Why didn't you made videos of Arithmatic Progressions?
Question
question no. 4
Prove that that line of intersection of planes 5x+2y-4z+2 and 2x+8y+2z-1 is parallel to tha plane 4x-2y-5z-2
Maths
Jan. 23, 2019, 9:44 a.m.
Answer
If magnitude of a.b vector =magnitude of a cross b vector then angle between a and b vector is
question no 16
A solid right circular cone of diameter 14 cm and height 8 cm is melted to form a hollow sphere. If the external diameter of the sphere is 10 cm, find the internal diameter of the sphere.