Triangle XYZ is right-angled at Y

MATHEMATICS · Subjective · CBSE · Mathematics · Introduction to Trigonometry · Introduction to Trigonometry

Problem

Triangle XYZ is right-angled at Y. If XY=10 cmXY = 10\,\text{cm} and XZ=102 cmXZ = 10\sqrt{2}\,\text{cm}, find the exact measure of ∠Z\angle Z.

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