SOLUTION: Find all solutions if
0 ≤ x < 2π.
Use exact values only. (Enter your answers as a comma-separated list.)
cos 2x cos x − sin 2x sin x = square root of 2 over
Algebra.Com
Question 960547: Find all solutions if
0 ≤ x < 2π.
Use exact values only. (Enter your answers as a comma-separated list.)
cos 2x cos x − sin 2x sin x = square root of 2 over 2
x=?
Answer by lwsshak3(11628) (Show Source): You can put this solution on YOUR website!
Find all solutions if
0 ≤ x < 2π.
Use exact values only. (Enter your answers as a comma-separated list.)
cos 2x cos x − sin 2x sin x = square root of 2 over 2
x=?
***
Identity: cos(x+y)=cosxcosy-sinxsiny
cos 2x cos x − sin 2x sin x = square root of 2 over 2
cos(2x+x)=√2/2
2x+x=π/4, 7π/4
3x=π/4, 7π/4
x=π/12, 7π/12
RELATED QUESTIONS
Find the exact solutions of the equation in the interval [0, 2π). (Enter your... (answered by ikleyn)
Solve the equation for x if 0 ≤ x < 2π. Give your answer in radians using... (answered by stanbon)
Solve the following equation for all radian solutions and if
0 ≤ x < 2π.... (answered by Fombitz)
Find all solutions of the equation in the interval [0, 2π). (Enter your answers as a (answered by Alan3354)
Solve the following equation for all radian solutions and if
0 ≤ x < 2π.... (answered by solver91311)
Find all solutions of the equation in the interval [0, 2π). (Enter your answers as a (answered by ewatrrr,Alan3354)
Find all values of x in the interval [0, 2π] that satisfy the equation. (Enter your... (answered by Cromlix,advanced_Learner)
Find all solutions of the equation in the interval [0, 2π). (Enter your answers as a (answered by Fombitz)
Use inverse functions where needed to find all solutions of the equation in the interval... (answered by ewatrrr)