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In the isoscele triangle [itex]\triangle ABC[/itex], [itex]\angle A[/itex] = 48 degrees. Bisect the angle [itex]\angle A[/itex] against [itex]\overline CB[/itex] in point T. Determine the [itex]\angle ATB[/itex] for the three possible solutions.

I've found two of them, but cannot find the last.

The first one is if you pick A as one of the conjugent angles and then you get [itex]\angle ATB[/itex] = 108 degrees.

The second one you find if you select the top angle and then get [itex]\angle ATB[/itex] = 90 degrees.

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# Homework Help: Geometric problem

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