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Answer:
tan x=sin x/cos x=sinx/3/5=5sinx/3
Secx=1/cosx=1/3/5=5/3
Cot x=1/tqnx=3/5sinx
ther3fore,
Lhs=(5sinx-3*5sinx/3)/3*5/3-4*3/5sinx
=0
1st quadrant
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