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Evaluate each of the following cot^2 30° − 2 cos^2 60° −3/4sec^2 45° − 4 sec^2 30°

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Evaluate each of the following

cot2 30° − 2 cos2 60° −3/4sec2 45° − 4 sec2 30°

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1 Answer

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Best answer

cot2 30° − 2 cos2 60° −3/4sec2 45° − 4 sec2 30° …(i)

By trigonometric ratios we have

By substituting above values in (i), we get

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