त्रिभुजों की सर्वांगसमता का उपयोग करके कोण ज्ञात करना

Triangle A B C and A D E are shown sharing the same point A with sides A D and A B both being four units. Sides A E and A C are both four point two units. Angle D A E is x degrees. Angle C A B is thirty-six degrees. Angle A B C is fifty-six degrees.