shoaib

when 2 is not equal to zero when-2 is not equal to_____

a boy of mass 'm' stands on one end of a wooden plank of length L and mass M. The plank is floating on water. If the boy walks from one end of the plank to the other end at a constant speed the resulting displacement of the plank is?

A fly wheel rotates at 300 rev/min.if the radius is 6cm through what total distance does a point on the rim travel in 30 sec.

please help me to solve this question sec^2A+tan^2A=(1-sin^4A)sec^4A

2x+2y=4

Its Answer is secx-cosx

20