[" If "a_(1),a_(2),a_(3),...,a_(87),a_(88),a_(89)" are the arithmetic means "],[" between 1and "$9," then "sum_(r=1)^(89)log(tan(a_(r))^(@))" is equal to "]

If a_(1),a_(2),a_(3),……a_(87),a_(88),a_(89) are the arithmetic means between 1 and 89 , then sum_(r=1)^(89)log(tan(a_(r ))^(@)) is equal to

If a_(1),a_(2),a_(3),……a_(87),a_(88),a_(89) are the arithmetic means between 1 and 89 , then sum_(r=1)^(89)log(tan(a_(r ))^(@)) is equal to

If a_(1),a_(2),a_(3),……a_(87),a_(88),a_(89) are the arithmetic means between 1 and 89 , then sum_(r=1)^(89)log(tan(a_(r ))^(@)) is equal to

If a_(1),a_(2),a_(3),……a_(87),a_(88),a_(89) are the arithmetic means between 1 and 89 , then sum_(r=1)^(89)log(tan(a_(r ))^(@)) is equal to

If a_(1),a_(2),a_(3)...a_(87),a_(88),a_(89) are the arithmetic means between 1 and 89 then sum^(89)log(tan(a_(r))^(@)) is equal to

If a_(1), a_(2), a_(3), a_(4), a_(5) and a_(6) are six arithmetic means between 3 and 31, then a_(6) - a_(5) and a_(1) + a_(6) are respectively =

If A_(1), A_(2), A_(3),....A_(51) are arithmetic means inserted between the number a and b, then find the value of ((b + A_(51))/(b - A_(51))) - ((A_(1) + a)/(A_(1) - a))

If A_(1), A_(2), A_(3),....A_(51) are arithmetic means inserted between the number a and b, then find the value of ((b + A_(51))/(b - A_(51))) - ((A_(1) + a)/(A_(1) - a))

If a_(1),a_(2),a_(3),..., are in arithmetic progression,then S=a_(1)^(2)-a_(2)^(2)+a_(3)^(2)-a_(4)^(2)+...-a_(2k)^(2) is equal