[" 78.If "sin(z+y-x),sin(x+z-y),sin(y+x-...

[" 78.If "sin(z+y-x),sin(x+z-y),sin(y+x-z)" are in "AP],[" prove that "tan x," tany,tanz are also in "AP?|4M-A-20|8-19|],[" C Sum the following to pterms "]

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If sin(y+z-x),sin(z+x-y),sin(x+y-z) be in A.P.prove that tan x, tan y, tan z are also in A.P.

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