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If ={ 30 }^{ o } then { 2 } is :

Question

If $θ = 30^{o}$ then $cos 2 θ$ is :

0

1

\frac{1}{2}

\frac{3}{2}

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Olivia Discussed

θ = 30^{o}

then

cos 2 θ

is :

9 mins ago

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9 mins ago

Text solutionVerified

Given :

θ = 3 0^{o}

cos 2 θ

= cos 2 (30^{o}) = cos 60^{o} = \frac{1}{2}

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