tan5 tan 25 tan30 tan65 tan85 = ?
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the answer for this question isβ3 by this method
=tan5.tan85.tan25.tan65.tan30
=tan(90-85).tan85.tan(90-65).tan65.tan30
=cot85.tan85.cot65.tan65.tan30
=1.1.tan30
=tan30
=β3
=tan5.tan85.tan25.tan65.tan30
=tan(90-85).tan85.tan(90-65).tan65.tan30
=cot85.tan85.cot65.tan65.tan30
=1.1.tan30
=tan30
=β3
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