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>
Answer:
290
Step-by-step explanation:
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Answer: y=−10
Step-by-step explanation: GIVE ME BRAINLIEST HOPE THAT HELPED
Answer:
54
Step-by-step explanation:
all you have to do is times 18 by 3
Answer:
312 784
Step-by-step explanation:
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