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Since the two triangles congruent, therefore,
➟ b + 5° = 55°
➟ b = 55° - 5°
➟ b = 50°
And,
➟ a - 10° = 90°
➟ a = 90° + 10°
➟ a = 100°
•°• The value of a is 100° and b is 50° respectively.
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