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anonymous
 4 years ago
What is cos(2∂) equal to?
anonymous
 4 years ago
What is cos(2∂) equal to?

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ash2326
 4 years ago
Best ResponseYou've already chosen the best response.1\[\cos (2\delta)= 2\cos^2 (\delta)1\]

vishal_kothari
 4 years ago
Best ResponseYou've already chosen the best response.5\[\cos ^{2}\theta\sin ^{2}\theta\]

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0thnx! so does 2cos2(δ)−1=cos2θ−sin2θ?

ash2326
 4 years ago
Best ResponseYou've already chosen the best response.1or \(cos^2\deltasin^2 \delta\) or \(12sin^2\delta\)
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