q2) a) write the equation cos2x + 8cosx+9=0 in terms

q1) 2cos2x is f(x)-square root3 is g(x) solve f(x)-g(x)=0 to get points of intersection in x is between 0 and 180degrees q2) a)
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2. asked by MR MATHEW MATICS
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q2) a) write the equation cos2x + 8cosx+9=0 in terms of cosx and show that for cosx it has equal rootsq2b) show that there are
1. 2 answers
2. asked by PLEASE ANSWER I NEED HELP CHEERS!!!!!!!!!!
3. 1,730 views
Solve the equation of the interval (0, 2pi)cosx=sinx I squared both sides to get :cos²x=sin²x Then using tri indentites I came
1. 4 answers
2. asked by Brian
3. 780 views
Find all solutions to the equation in the interval [0, 2pi)cos4x-cos2x=0 So,this is what i've done so far: cos4x-cos2x=0
1. 1 answer
2. asked by Maria
3. 1,624 views
Solve this equation fo rx in the interval 0<=x<=3603sinxtanx=8 I would do it this way: sinxtanx = 8/3 sinx(sinx/cosx)=8/3
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2. asked by Edward
3. 961 views
Please help!!!!!!!!!!! Find all solutions to the equation in the interval [0,2π).8. cos2x=cosx 10. 2cos^2x+cosx=cos2x Solve
1. 5 answers
2. asked by Anonymous
3. 816 views
find all solutions of the equation 2sin x cos2x-cos2x=0 over the interval 0<x<=pi
1. 4 answers
2. asked by owo
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Solve the equation 2cos2x = √3 for 0°≤x≤360°I did this: cos2x = √3 /2 2x=30 x=15 x=15, 165, 195, 345 Is this correct?
1. 1 answer
2. asked by Autumn
3. 1,781 views
Solve identity,(1-sin2x)/cos2x = cos2x/(1+sin2x) I tried starting from the right side, RS: =(cos²x-sin²x)/(1+2sinxcosx)
1. 3 answers
2. asked by sh
3. 734 views
Hello! Can someone please check and see if I did this right? Thanks! :)Directions: Find the exact solutions of the equation in
1. 1 answer
2. asked by Maggie
3. 816 views