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Find the exact value of tan(arccos2/3) without the aid of a calculator

INTO JAPANESE

計算機を使用せずにtan（arccos2 / 3）の正確な値を見つける

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Find the exact value of tan (arccos2 / 3) without using a calculator

INTO JAPANESE

電卓を使用せずにタンの正確な値（arccos2 / 3）を見つける

BACK INTO ENGLISH

Find the exact value of tan (arccos2 / 3) without using a calculator