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Tan20+tan40+3^1/2.tan20.tan40=? |
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Answer» TAN60 = (TAN(20+40) √3 ={ TAN20 + TAN40 }/{1- tan20.tan40} Tan20 + tan40 = √3 - √3tan20.tan40 Tan20 + tan40 + √3tan20.tan40 = √3 |
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