The horizontal range is same whether the angle of projection is ` alpha ` or `beta` , where ` alpha+ beta` = …………………….. .

Particle "A" is released from a point "P" on a smooth inclined plane inclined at an angle alpha with the horizontal.At the same instant another particle "B" is projected with initial velocity 'u' making an angle beta 'with the horizontal.Both the particles meet again on the inclined plane.the relation between ' alpha and beta is 1) alpha+beta=(pi)/(6) 2) alpha+beta=(pi)/(4) 3) alpha+beta=(pi)/(3) 4) alpha+beta=(pi)/(2)

alpha and beta are acute angles and cos2 alpha=(3cos2 beta-1)/(3-cos2 beta) then tan alpha cot beta=

If sin alpha cos beta=-(1)/(2) then find the range of values of cos alpha sin beta

Two particles are projected at the same instant from the same point of inclinations alpha and beta to the horizontal.if they simultaneously hit the top and the bottom of a vertical pole subtending an angle gamma at the point of projection, show that tan -alpha tan beta=tan gamma .

If sin alpha cos beta=-(1)/(2) then find the range of values of cos alpha sin(beta

The angle between lines x cos alpha+y sin alpha=p_(1), and x cos beta+y sin beta=p_(2), where alpha>beta is