SOLUTION: Solve the equation on the given interval, expressing the solution for x in terms of inverse trigonometric functions. (Enter your answers as a comma-separated list.)
7(cos x)^2 &#
Algebra.Com
Question 735214: Solve the equation on the given interval, expressing the solution for x in terms of inverse trigonometric functions. (Enter your answers as a comma-separated list.)
7(cos x)^2 − cos x − 6 = 0 on [π/2, π]
Thank you!
Answer by lwsshak3(11628) (Show Source): You can put this solution on YOUR website!
Solve the equation on the given interval, expressing the solution for x in terms of inverse trigonometric functions. (Enter your answers as a comma-separated list.)
7(cos x)^2-cos x−6=0 on [π/2, π]
..
7(cos x)^2-cos x−6=0
(7cosx+6)(cosx-1)=0
..
7cosx+6=0
7cosx=-6
cosx=-6/7
x=arccos(-6/7)
..
cosx-1=0
cosx=1
x=arccos(1)
..
solutions: x=arccos(-6/7), arccos(1)
RELATED QUESTIONS
Solve the equation on the given interval, expressing the solution for x in terms of... (answered by lwsshak3)
(a) Solve the equation on the given interval, expressing the solution for x in terms of... (answered by lwsshak3)
Solve the equation on the given interval, expressing the solution for x in terms of... (answered by stanbon)
Please help me solve this equation.
(a) Solve the equation on the given interval,... (answered by fcabanski)
(a) Solve the equation on the given interval, expressing the solution for x in terms of... (answered by lwsshak3)
How to solve this equation?
A. Solve the equation in the interval (-pi/2 , pi/2)... (answered by stanbon)
Solve the equation in the interval [0,2\pi]. If there is more than one solution write... (answered by Alan3354)
Solve the equation in the interval [0,\, 2 \pi]. If there is more than one solution... (answered by Theo)
Use inverse trigonometric functions to express the solution of the following equation... (answered by Alan3354)