Simplifique a6,n + a4,n-2

a5,n-1 + a3,n-3

Step-by-step explanation:

Given  

Then simplify the numerator as

n+n-2 = 2n-2

Also simplify the denominator as

n-1+n-3 = 2n-4

Rewrite as

cancel 2/2 to get 1 and remain with;

here you hope this .

step-by-step explanation:

hypotenuse = √(15² + 8²)

=  √(225 +64)

=  √(289) = 17

sin(x) = cos(y) = 8/17

they are identical so long as you are doing the sine of one angle and the cosine of the only other angle that isn't the right angle.