find all the solutions of the equation in the interval 0 2pi

find all the solutions of the equation in the interval 0 2pi in exact value of radians, for the equation cos3x=1/2
in Trigonometry Answers by

Your answer

Your name to display (optional):
Privacy: Your email address will only be used for sending these notifications.
Anti-spam verification:
To avoid this verification in future, please log in or register.

1 Answer

kosine(3x)=0.5

3x=invers kosine(0.5)=60 deg

x=60/3=20 deg

& -20 deg hav same kosine

& 3x=(360-60) is the same
by

Related questions

1 answer
4tanx^2-1=tan^2x in interval [0,2pi)
asked Dec 11, 2012 in Trigonometry Answers by anonymous | 1.3k views
1 answer
sin^2x - 2sinx - 3 = 0 with Interval (0, 2pi)
asked May 4, 2012 in Trigonometry Answers by anonymous | 1.6k views
Welcome to MathHomeworkAnswers.org, where students, teachers and math enthusiasts can ask and answer any math question. Get help and answers to any math problem including algebra, trigonometry, geometry, calculus, trigonometry, fractions, solving expression, simplifying expressions and more. Get answers to math questions. Help is always 100% free!

Most popular questions within the last 3000 days

  1. 50+50-25X0+2+2= (19)
  2. it takes 10 road workers 5 days to complete a road repair when working 2 hours a day.Working at the same pace,how many days will it take 2 people working 5 hours a day to finish it? (3)
  3. Solve 15 -1(12÷4+1)? (4)
  4. 8:4(5+2) (3)
  5. How can i represent 1/3; 3/3; 7/3; 10/3 and 15/3 on a number line? (1)

Most popular tags

87,516 questions
100,279 answers
2,420 comments
731,841 users