2014 · Q53
If cos x + sec x = 2, then what is cos^n x + sec^n x equal to, where n is a positive integer?
Elementary MathematicsTrigonometry
- A2
- B2n - 2
- C2n - 1
- D2n
Explanation
cos x + sec x = 2 forces cos x = 1, so cos^n x + sec^n x = 2.
If cos x + sec x = 2, then what is cos^n x + sec^n x equal to, where n is a positive integer?
Explanation
cos x + sec x = 2 forces cos x = 1, so cos^n x + sec^n x = 2.