Yes, I have read the answer to original query, it's really helpful.

I want to get atleast first four roots of the equation 

cos(x).cosh(x)-1=0

Can you please tell, is there a way to see the complete steps solution of the roots finding of this equation?

How can we find roots of the following equation on maple, is there a way to find roots of this equation. Kindly help with this equation.

cos(x)*cosh(x) - 1 = 0