Correct Answer: Option D

Explanation

∠BAC = 90°

∠ACD = 90° if AE and CE are the bisectors of ∠BAC and ∠ACD respectively ∠BAE = 45°; ∠DCE = 45°

∴ ∠EAC = ∠ECA = 45°

But ∠EAC + ∠ACE + ∠AEC = 180° (angle in a △)

∴ 45° + 45° + ∠AEC = 180°

∠AEC = 180° - 90°

∠AEC = 90°

• what does productivity of grass means and what are they? Answer this

  1 Answers   ·   Agricultural Science   ·   10 hours ago
• what are the recommend text in Economics? Answer this

  1 Answers   ·   Economics   ·   5 hours ago
• a compund microscope by lens of focal length 1cm and 5cm.an object placed 1.2cm from the objective lens if a... Answer this

  1 Answers   ·   Physics   ·   1 day ago