log5 a.logax=2, then x is equal to
125
a2
25
None of these
log5 a.loga x=2⇒log5x=2⇒x=52=25
Using logb a.logc b=logc a
If the fifth term of the expansion (a2/3+a−1) does not contain 'a'. Then n is equal to
If a=cos α cos β+sin α sin β cos γ, b=cos α sin β−sin α cos β cos γ and c=sin α sin γ then a2+b2+c2 is equal to
√0.000020250.000324=(1x)2 , then x is equal to