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Can someone help me please?

Can someone help me please?-example-1

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Explanation:

ZX is the diameter of the circle with center A.


\therefore m\angle YAZ + m\angle XAY = 180°\\</p><p>\therefore (5w+4)°+(11w)°= 180°\\</p><p>\therefore (16w+4)° = 180°\\</p><p>\therefore 16w+4 = 180\\</p><p>\therefore 16w = 180 - 4\\</p><p>\therefore 16w = 176\\</p><p>\therefore w = (176)/(16)\\</p><p>\therefore w =11\\</p><p> \therefore m\angle YAZ = (5w+4)°\\</p><p>\therefore m\angle YAZ = (5* 11+4)°\\</p><p>\therefore m\angle YAZ = (55+4)°\\</p><p>\therefore m\angle YAZ = 59°\\</p><p>\because \overset{\frown}{YZ) = m\angle YAZ\\</p><p>\therefore \overset{\frown}{YZ) = 59°\\</p><p>

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