1. The problem statement, all variables and given/known data Need to calculate the error of coefficient of static friction in a lab where: µs = tan(theta)s They say to use the general theory of errors? 2. Relevant equations delta[tan(theta)] = [1/cos(theta)]^2 (delta)(theta) 3. The attempt at a solution Do I just plug in my angle value of 26 into the theta's to get the answer? I tried that and I got a value of 0.40, which doesn't make sense because my coefficient of static friction is 0.50?