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tan20tan40tan60 =tan20-tan40-tan60

aditya bhardwaj , 14 Years ago
Grade 11
anser 1 Answers
Rahul askIITiansExpert.IITR

Last Activity: 14 Years ago

tan60=tan(40+20)

tan60=tan40 + tan20/(1-tan40tan20)

tan60-tan60tan40tan20=tan40+tan20

tan60tan40tan20=tan60-tan40-tan20

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