Recommended Questions
- cos .((pi)/(4)+x) +cos ((pi)/(4) -x) =sqrt(2) cos x.
Text Solution
|
- Prove that cos(pi/4+x)+cos(pi/4-x)=sqrt(2)cosx.
Text Solution
|
- Prove that: cos((3pi)/4+x)-cos((3pi)/4-x)=-sqrt(2)sinx
Text Solution
|
- If pi < x < 2pi, prove that (sqrt(1+cosx)+sqrt(1-cosx))/(sqrt(1+...
Text Solution
|
- Prove that: cos(pi/4+x)+cos(pi/4-x\ )=sqrt(2)cosx
Text Solution
|
- Prove that: cos((3pi)/4+x)-cos((3pi)/4-x\ )=sqrt(2)sinx
Text Solution
|
- Prove that: cos((3pi)/4+x)-cos((3pi)/4-x)=-sqrt(2)sinx
Text Solution
|
- Prove that: cos(pi/4+x)+cos(pi/4-x)=sqrt(2)\ cos x
Text Solution
|
- cos x-sin x = sqrt (2) cos (x + (pi) / (4))
Text Solution
|