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Find the principal solutions of the angl...

Find the principal solutions of the angles in the equation
`2 Cos^(2) theta = 1`

Text Solution

Verified by Experts

The correct Answer is:
`45^(@), 135^(@)`
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Knowledge Check

  • The principal solution of sintheta=-(1)/(2) is

    A
    `-(pi)/(4)`
    B
    `-(pi)/(6)`
    C
    `-(pi)/(3)`
    D
    `(7pi)/(6)`

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