2009 · Q4
If x+(1/x)=2 cos a than what is the value of x 2 +(1/x 2 )?
Elementary MathematicsStatistics
- A4 cos 2 a
- B4 cos2a- 1
- C2 cos 2 a – 2 sin 2 a
- Dcos 2 a – sin 2 a
Explanation
Solved; answer C.
If x+(1/x)=2 cos a than what is the value of x 2 +(1/x 2 )?
Explanation
Solved; answer C.