In the given figure, each of PA, QB and RC is perpendicular to Ac. If `AP=x,QB=z, RC=y, AB=a and BC=b`, show that `(1)/(x)+(1)/(y)=(1)/(z)`

In the given figure, PA, QB and RC each is perpendicular to AC such that PA=x, RC=y, QB=z, AB=a, and BC=b Prove that (1)/(x)+(1)/(y)=(1)/(z)

If x+y+z=a , show that (1/x+1/y+1/z)^-1ge9/a

In the above figure, seg PA, seg QB and seg RC are perpendicular to seg AC. From the information given in the figure, prove that: (1)/(x) + (1)/(z) = (1)/(y)

a^(x)=b^(y)=c^(z) and b^(2)=ac then prove that (1)/(x)+(1)/(z)=(2)/(y)

In the given figure AB|PQ|CD, AB =x units ,CD=y units and PQ=z units,Prove that (1)/(x)+(1)/(y)=(1)/(z)

In Fig.4.142,PA,QB and RC are each perpendicular to AC. Prove that (1)/(x)+(1)/(z)=(1)/(y). (FIGURE)

In the adjoining figure, seg PA , seg QB, seg RC and seg SD are perpendicular to line AD. AB = 60, BC = 70, CD = 80, PS = 280, then find PQ, QR and RS.

In the given figure AB || PQ || CD, AB=x, CD=y and PQ=z. Prove that 1/x+1/y=1/z