Question
Download Solution PDFIn Δ XYZ, ∠X = 90°, YZ = 15 cm, and XZ = 12 cm. Then find Cos Y.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFGiven:
In Δ XYZ, ∠X = 90°, YZ = 15 cm, and XZ = 12 cm.
Formula used:
(Hypotenuse)2 = (Perpendicular)2 + (Height)2
Calculation:
According to the formula,
⇒ 152 = 122 + (XY)2
⇒ (XY)2 = 225 - 144 = 81
⇒ XY = 9 cm
⇒ CosY = XY/YZ = 9/15 = 3/5
⇒ Hence, CosY is equal to 3/5
Last updated on Jul 15, 2025
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