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If θ is a positive acute angle such that sec θ = cosec 60°, find 2 cos^2 θ – 1

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asked Feb 16, 2018 in Mathematics by sforrest072 (157,439 points)

If θ is a positive acute angle such that sec θ = cosec 60°, find 2 cos² θ – 1

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answered Feb 16, 2018 by mdsamim (213,225 points)
selected Feb 16, 2018 by sforrest072

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If θ is a positive acute angle such that sec θ = cosec 60°, find 2 cos^2 θ – 1

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