Evaluate
(tan20)(tan40)(tan50)(tan70).

Asocial networking site currently has 400,000 active members, and that figure is predicted to increase by 32% each year. the following expression represents the number of active members on the site after t years.

F(x)=x/2-2 and g(x)=2x^2+x-3 find (f+g)(x)

Tan198=asin164=? how to solve this? ?