1. The problem statement, all variables and given/known data evaluate the limit as x goes to 0 of: tan(4x^2)^2/(3x^4) (thats suppose to say the tangent squared of 4 x squared all over 3 x to the 4th) 2. Relevant equations n/a 3. The attempt at a solution the only trig limit stuff i know is the limit to 0 of sinx / x = 1 and limit to 0 of (1-cos x)/x = 0 is there a tangant one i should know? what about tangant squared? i also considered changing it to sin squared over cos squared but i dont know what i could do that with. if anyone could give me a hint to get me started, i would appreciate it. thanks.