Register

Cos2x + cosx + 1=0 lam on dum

Cos2x + cosx + 1=0 lam on dum
asked 230k views
3 votes
Cos2x + cosx + 1=0
lam on dum

asked
User Raj Tamakuwala
by
8.4k points

1 Answer

6 votes

Explanation:

cos(2x)+cos(x)+1=0{2cos^2(x)-1}+cos(x)+1=0

let cos x=y

2y^2+y+1=0

  1. now solve for y and then solve for y=cosx
answered
User Sleiman
by
7.8k points
← Prev Question Next Question →

Related questions

User Xingdong
asked May 2, 2024 177k views
Sinx+2cosx-cos2x+cosx ​
Xingdong asked May 2, 2024
by Xingdong
8.3k points
1 answer
5 votes
177k views
User Ivan Klass
asked Dec 15, 2024 118k views
Use an identity to solve the followin cos2x=cosx-1
Ivan Klass asked Dec 15, 2024
by Ivan Klass
8.2k points
1 answer
4 votes
118k views
User Robin Huy
asked Nov 25, 2024 134k views
Solve, for 0 (sin2x+sinx)/(cos2x+cosx+1)=2cosx , aswers to 3 decimal places.
Robin Huy asked Nov 25, 2024
by Robin Huy
8.9k points
1 answer
4 votes
134k views
Ask a Question
Welcome to Qamnty — a place to ask, share, and grow together. Join our community and get real answers from real people.

Categories

Other Questions

What is .725 as a fraction
How do you estimate of 4 5/8 X 1/3
A bathtub is being filled with water. After 3 minutes 4/5 of the tub is full. Assuming the rate is constant, how much longer will it take to fill the tub?
Link Copied!