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Mathematics
Mathematics
Problem
Triangle XYZ is right-angled at Y with
X
Y
=
7
cm
XY = 7\,\text{cm}
X
Y
=
7
cm
and
Y
Z
=
24
cm
YZ = 24\,\text{cm}
Y
Z
=
24
cm
. Calculate
cos
∠
Z
\cos \angle Z
cos
∠
Z
.
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