0578~0609 trigonometric ratio..middle school 3rd.

Using sin,cos,tan... find value but this course usually using 30',45'60'
Using table find another value although leackage of informatiopn.
I thiank math is lead to value although information....find guess value...

0562 ~ 0576 trignometric ratio

This is trigonometric ratio. Possilbe to find value although leackage of value using angle...
This is course of korea student's mathmatics book for middle school 3rd : 16 years old...

M3-2 0117 ~ 0192 phytagoras theory and diagram

I upload Question facebook and full upload blog shot. free book for math. Korean math book is so efficiency than another nation. I upload free book. you just save ur money and Study efficiently