- A65
- B59
- C130
- D71
Step-by-Step Solution
Angle A = 180 - 90 - 40 = 50°. Bisector gives angle BAD = 25°. In triangle ABD: angle ADB = 180 - 90 - 25 = 65°.
Answer: A) 65
With angle B = 90° in triangle ABC, the bisector of angle A meets BC at D. If angle C = 40°, find angle ADB.
Class 9Angle Sum of a TriangleGeometry — Lines and Angles
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