sinxcosy =1/4 , 3tanx = 4tany , then sin (x-y)=?a). 1/16 b). 1/8 c).3/16 d). 3/4
sinxcosy =1/4 , 3tanx = 4tany , then sin (x-y)=?
a). 1/16 b). 1/8 c).3/16 d). 3/4
keerthi , 7 Years ago
Grade 11
Trigonometry> sinxcosy =1/4 , 3tanx = 4tany , then sin ...
1 AnswersAkhil
Last Activity: 7 Years ago
3tan x=4tany,3sinx/cosx=4siny/cosy. 3sinx×cosy=4siny×cosx (sinx×cosy=1/4). 3×1/4=4×siny×cosxSiny×cosx=3/16Now,, Sin(x-y)=sinx×cosy-cosx×siny=1/4-3/16=1/16
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