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Find the value of tan 180/8

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Find the value of tan 180/8
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Virendra Kumaragarwal 5 years, 1 month ago

tan180/8 tan x=2tanx/2 /1-ttan^2x/2 tan180/4=tan45=1 1=2tan45/2÷1-tan^2(45/2 1-tan^2(45/2)=2tan45/2this is quadratic in tan 45/2nowsolve
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