Given AC approximately CH Find the cosine of H Write it as a

Given AC approximately CH, Find the cosine of H: Write it as a ratio. No calculators.

Solution

Solution:

Since AC = CH

since triagle is right

therefore

AC² + CH² = AH²

2CB² = AH²

CB = AH/2

Now

As we know that

Cos(H) = Base / hypotenous

= CB / AH

Plug CB = AH/2 from above

Cos(H) =( AH/2)/AH

= 1/2  

Answer