Asked by Kate
4cos(x)+5=6sec(x)
Answers
Answered by
Reiny
What about it? Are we solving for x ??
if so, then ....
4 cosx + 5 = 6/cosx
4cos^2x + 5cosx = 6
4cos^2x + 5cosx - 6 = 0
(4cosx - 3)(cosx + 2) = 0
cosx = 3/4 or cosx = -2 , Not possible since |cosx| ≤1
so cosx = 3/4
x = 41.4° or x = 221.4°
if so, then ....
4 cosx + 5 = 6/cosx
4cos^2x + 5cosx = 6
4cos^2x + 5cosx - 6 = 0
(4cosx - 3)(cosx + 2) = 0
cosx = 3/4 or cosx = -2 , Not possible since |cosx| ≤1
so cosx = 3/4
x = 41.4° or x = 221.4°
There are no AI answers yet. The ability to request AI answers is coming soon!
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.