Using the identity :
Cos (2a) = 1-2 Sin^2(a)
Therefore :<span>1−2 sin ^2 (22.5∘) = Cos(2a)
= Cos (2 * 22.5) = Cos 45</span>
Can u show me an example so I could do this foru
154cm squared this is the only right answer
Answer:
It's impossible because the figure is greater than 10
Step-by-step explanation:

Therefore:

Answer:
15m+80 would be the correct equation