How do I solve this?
Differentiate tan(x) to get sec^2 (x)
Hint: sec = 1/cos
Input x value for each to solve
Could be wrong but I'm certain this is the method
Also here's a couple of websites for mathematical problems if you are struggling, plus they provide step by step help
http://m.wolframalpha.com/
https://symbolab.com
>>149682
Close. Derivative of tan(x) * dx/dt