List of top Mathematics Questions on Algebra asked in SRMJEEE

\(\frac{1}{2.5}+\frac{1}{5.8}+\frac{1}{8.11}+...+\frac{1}{(3n-1)(3n+2)}\) is equal to

If tan (A + B) = m and tan (A - B) = n then value of tan 2A is