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Mathematics
Problem
In cyclic quadrilateral
P
Q
R
S
PQRS
P
QR
S
,
∠
P
=
4
y
∘
\angle P = 4y^{\circ}
∠
P
=
4
y
∘
and
∠
R
=
(
3
y
+
10
)
∘
\angle R = (3y + 10)^{\circ}
∠
R
=
(
3
y
+
10
)
∘
. Calculate: (i) the value of
y
y
y
, and (ii) the measure of
∠
R
\angle R
∠
R
.
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