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Grade: 11
        
sinxcosy =1/4 , 3tanx = 4tany , then sin (x-y)=?
a). 1/16 b). 1/8 c).3/16  d). 3/4
8 months ago

Answers : (1)

Akhil
21 Points
							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
						
8 months ago
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