find the principal solution of the following equation Cos o =1upon 2
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Step-by-step explanation:
As we know that principal value branch of cos inverse is [0,π]
thus while solving the equation we must remember that cos inverse cancel cos x only if x belongs to principal value branch.
we know that cos π/3= 1/2
here both cancels with each other because π/3 belongs to [0,π]
Thus
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