[cos x+cos y=(1)/(3)sin x+sin y=(1)/(4)],[" Prove that "tan(x+4)=(3)/(4)]

If cos x + cos y =(1)/(3) and sin x + sin y=(1)/(4) prove that tan ((x+y)/(2))=(3)/(4)

cos x + cos y = (1) / (3), sin x + sin y = (1) / (4) rArr sin (x + y)

if x and y are acute angles such that cos x+cos y=(3)/(2) and sin x+sin y=(3)/(4) then sin(x+y)=

If sin x + cos y = (1) / (3) and cos x + sin y = (3) / (4) then tan ((xy) / (2)) =

If cos x+ cos y = 1//3 , sin x + sin y=1//4 " then " cos (x+y)=

I : If cos x + cos y=1/3 , sin x+sin y=1//4 " then " cos (x+y)=7//25 II : If cos x + cos y=1//3 , sin x + sin y=1//4 " then " sin(x+y)=24//25

" 1.If sin x+sin y=(1)/(4),cos x+cos y=(1)/(3) then tan((x+y)/(2))=

If sin x cos y=(1)/(4) and 3tan x=4 then sin(x-y)=

If sin x cos y=(1)/(4) and 3tan x=4tan y then sin(x-y)=