Chapter 2 - Section 2.3 - Solving Right Triangles - 2.3 Problem Set - Page 79: 5

a. 2 b. 3 c. 2 d. 2

if there are only of zeros after a comma or if you have read left to right for nonzero numbers, stop there, you found the answer. If there is a decimal point and only zeros come after the decimal point, include them in your count however, if there are nonzero numbers after the zeros after the decimal point (what a mouthfull there) then only count the nonzero numbers at the end