SOLUTION: evaluate arc cot [2cos(arc sin .5)]

Algebra ->  Trigonometry-basics -> SOLUTION: evaluate arc cot [2cos(arc sin .5)]      Log On


   

Question 770304: evaluate arc cot [2cos(arc sin .5)]
Answer by lwsshak3(11628) About Me  (Show Source):
You can put this solution on YOUR website!
evaluate arc cot [2cos(arc sin .5)]
***
arc sin .5=30º
cos 30º=√3/2
2cos(arc sin .5)=2*√3)/2=√3
arc cot [2cos(arc sin .5)]= arc cot √3)=arc tan(1/√3)=30º