SOLUTION: write down the value of cos 150

Algebra ->  Numeric Fractions Calculators, Lesson and Practice -> SOLUTION: write down the value of cos 150      Log On


   

Question 396023: write down the value of
cos 150
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
write down the value of
cos 150
cos150 = cos(90+60)
= sine 60
sin60 = 0.866