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>
Cross multiplication
or multiplying by a number which goes in both rates
Answer:
2
Step-by-step explanation:
Answer:
45 times 89
Step-by-step explanation:
The instuments are irrelevant and are only there to distract you.