1. The Great Wall of China is 13,170.696
2.how many feet are in a mile= 5,280= 1 mile
3. 19,536,000=3700 miles
0.02777
it is a repeated number.
cos 2x=2 cos ^2 x-1
cos x=sqrt(1+cos 2 x)/2
x=67.5
cos 67.5=sqrt(1+ cos 135)/2
=sqrt(1-cos45)/2
=sqrt(1-sqrt(2)/2)/2
=sqrt(2-sqrt2)/4
Hey there!☺


We already know that a positive is greater than a negative. A negative is below positive. The positive we have is 25 and the negative we have is -25. 25 is greater because it is a positive.
is your answer.
Hope this helps!
