Question #02022

1 Answer
Feb 10, 2017

pi/6 , (5pi)/6 , (13pi)/6, (17pi)/6

Explanation:

sin x = 1/2
Use trig table and unit circle -->
sin x = 1/2, trig table gives --> arc x = pi/6
Unit circle gives another arc x that has same sin value:
x = pi - pi/6 = (5pi)/6
Answers for (0, 2pi)
pi/6, (5pi)/6
Answers for (2pi), 3pi):
pi/6 + 2pi = (13pi)/6
(5pi)/6 + 2pi = (17pi)/6