Biology, asked by titlimailggmailcom, 10 months ago

please help help help help ​

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Answered by MidA
2

Answer:

55°

Explanation:

already solved in the given figure.

/_XYZ = /_XZY = 45° (since, XY = XZ)

/_ABY = /_XBC = 45° - 30° = 15°

/_ XCB = 90° - /_XBC = 90° - 15° = 75°

/_CBZ = /_XBC - /_CZB = 75° - 20° = 55°

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