lilsis76 Group Title okay umm....how do i do this arithmetic sequence find the sum: pi/3 + 2pi/3 + pi + 4pi/3 +...+13pi/3 how do i do this? im so lost one year ago one year ago

1. satellite73 Group Title

ignore the $$\pi$$ and add $\frac{1}{3}+\frac{2}{3}+\frac{3}{3}+...$ or better yet add $1+2+3+...+13$ and the multiply the result by $$\frac{\pi}{3}$$

2. lilsis76 Group Title

okay let me try it

3. lilsis76 Group Title

haha im so lost hold on

4. lilsis76 Group Title

91pi/3 ? @satellite73

5. satellite73 Group Title

lets see

6. satellite73 Group Title

yup you got it

7. lilsis76 Group Title

coool :) now i got another problem on a diff proble m :?