Question

please help me check my work!

Answer 1

Cosine Pi/8 cannot exceed 1 and would be positive, is that your result ???

Answer 2

i dont know how to proceed

Answer 3

Is your result plus or minus \[\sqrt{2 + \sqrt{2}}\]

Answer 4

If it is that would be a value of 1.85 which is larger than 1 and impossible as a cosine function ranges from 0 to 1 or 0 to -1.

Answer 5

Also from the link, I can not determine what the actual problem is???

Answer 6

The cosine of pi/8 which is cos 22.5 degree would be 0.924

Answer 7

Is this your problem?