Inequalities (Unit 1 â Unit 3) Solutions to Exercises Inequalities (Unit ...
Inequalities (Unit 1 â Unit 3) Solutions to Exercises Inequalities (Unit ...
Inequalities (Unit 1 â Unit 3) Solutions to Exercises Inequalities (Unit ...
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andRRCE1 ⎛csin A bsin B esin B f sin A⎞= ⎜ + + + ⎟4 ⎝ sin C sin C sin C sin C ⎠1 ⎛esin C dsin A asin A bsinC⎞= ⎜ + + + ⎟4 ⎝ sin B sin B sin B sin B ⎠ .x y x yAdding these inequalities and using the fact that + ≥2 ⋅ = 2 for x, y > 0, we havey x y x1 pRA + RC + RE≥ (2 a+ 2 b+ 2 c+ 2 d + 2 e+ 2 f ) =4 2as desired.15