Math Calculators, Lessons and Formulas
It is time to solve your math problem
Find the limit:
Direct substitution gives the indeterminate form 0/0. You can still
solve this problem, however: write tan x as (sin x)/(cos x).
The essence of mathematics is its freedom.
Welcome to MathPortal. This web site owner is mathematician Miloš Petrović.
I designed this web site and wrote all the lessons, formulas and calculators.
If you want to contact me, probably have some question write me using the contact form or email me on