if a=30 degree find cos 2a
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Cos 2(30) =cos 60 = 1/2
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Cos2a=Cos^2a-Sin^2a
Cos2(30)=Cos^2(30)-Sin^2(30)
Now u can do the further processes
Cos2(30)=Cos^2(30)-Sin^2(30)
Now u can do the further processes
wantedgirl:
It's wrong dude
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