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OpenStudy (anonymous):
The value of tan9 - tan 27- tan 63 + tan 81=?
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OpenStudy (anonymous):
@satellite73 @shubhamsrg
OpenStudy (apoorvk):
club the first and the last terms, and the second and the third terms together respectively. then simplify the two terms that you get. (since 9 and 81 add up to 90, as well as 27 and 63)
OpenStudy (apoorvk):
|dw:1341932719319:dw| can you work this^ out?
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