The problem tells us to approximate the integral using the midpoint rule. n=5, sin(x)2 dx 0 to 1. I understand that the answer is .2(sin(.1)^2 + sin(.3)^...). When I use my calculator to get the decimal answer, I cannot get the same answer the book has. I don't know what I am doing wrong.

Question

The problem tells us to approximate the integral using the midpoint rule.  n=5, sin(x)2 dx   0 to 1.  I understand that the answer is .2(sin(.1)^2 + sin(.3)^...).  When I use my calculator to get the decimal answer, I cannot get the same answer the book has.  I don't know what I am doing wrong.