jenniferlynn jenniferlynn

01-06-2016
Physics

contestada

Enter the expression 2cos2(θ)−1, where θ is the lowercase Greek letter theta.

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Hussain514 Hussain514

09-06-2016

2cos2(θ)−1 = 0
2cos2(θ)=1
cos2(θ)=1/2
2θ=arc cos1/2
2θ=60 degrees
θ=30 degrees

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