The older square-shaped floppy diskettes measured 15 cm on each side. what was the diagonal length of a diskette?

Step-by-step explanation:

The formula we can use is

Where d is the length of the diagonal and a is the length of the side of the square

Since, the floppies are in square shape and side length is 15, so a = 15

We simply put it into the formula and get length of diagonal.

Hence, diagonal length is  

hope it you

step-by-step explanation:

sin(7pi/6 - pi/3)  

= sin(7pi/6 - 2pi/6)  

= sin(5pi/6)  

= sin(pi - pi/6)  

= sin(pi/6)  

= 1/2  

sin 7pi/6 - sin pi/3  

= sin (pi + pi/6) - sin pi/3  

= -sin pi/6 - sin pi/3  

= -1/2 - sqrt(3)/2  

= -(1+sqrt(3))2