a) -tan(x)
b) -cot(x)
c) sec(x)
d) -csc(x)
Answer: a) -tan(x)
Explanation: Using the chain rule, we can find the derivative of ln(cos(x)) as -tan(x) / cos(x) = -tan(x).
a) -tan(x)
b) -cot(x)
c) sec(x)
d) -csc(x)
Answer: a) -tan(x)
Explanation: Using the chain rule, we can find the derivative of ln(cos(x)) as -tan(x) / cos(x) = -tan(x).