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the value of tan 70o - tan 20 o - 2 tan 40o ???

mansi dabriwal , 10 Years ago
Grade 12th pass
anser 3 Answers
ng29
hey mansi 
are u sure that its tan 40 in the question   i  had solved it for  tan50
 reply
Last Activity: 10 Years ago
mansi dabriwal
yah...i got this question in arihant cd of bitsat u cn cross check...
Last Activity: 10 Years ago
ng29
then its answer may be   4 tan100
tan 70o   - tan 20 o - 2 tan 40o
cot200 – tan200 – 2 tan400                                     using  cot x – tan x = 2 cot 2x
2 cot 400 – 2 tan 400
4 cot 80 0
4 tan 100
approve if useful
 
 
Last Activity: 10 Years ago
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