In triangle ABC, angle B is 46 degrees, angle C is 71 degrees, BD is bisector. Find the corner ADB.

Let us determine what value the angle A in the original triangle will equal if from the condition of our problem we know for sure that the angle C in it is 71 °, and the angle B is 46 °:

180 – 71 – 46 = 63.

Let us determine what value the angle ABD will equal if from the condition of our problem we know for sure that BD is a bisector:

46: 2 = 23.

Let’s determine what value the angle ADB will equal, because we found the other two angles in the triangle of the same name above:

180 – 63 – 23 = 94.

Answer: The ADB angle is 94 °.



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