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Byju's Answer
Standard VII
Mathematics
Incentre and Its Construction
It is given t...
Question
It is given that
∠
X
Y
Z
=
64
o
and
X
Y
is produced to point
P
. Draw a figure from the given information. If ray
Y
Q
bisects
∠
Z
Y
P
, find reflex
∠
Q
Y
P
in degrees.
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Solution
It is given that say
Y
Q
bisects
∠
Z
Y
P
So let,
∠
P
Y
Q
=
∠
Q
Y
Z
=
x
∠
P
Y
Z
=
2
x
Since
Q
Y
stands on say
P
X
∠
P
Y
Z
+
∠
Z
Y
X
=
180
o
⇒
2
x
+
64
o
=
180
o
[
∵
∠
Z
Y
X
=
∠
X
Y
Z
=
64
o
]
⇒
x
=
(
180
−
64
)
/
2
x
=
58
0
∴
∠
X
Y
Q
=
∠
X
Y
Z
+
∠
Z
Y
Q
=
64
o
+
58
o
=
122
o
and reflex
∠
Q
Y
P
=
360
o
−
∠
Q
Y
P
=
360
o
−
x
∠
Q
Y
P
=
360
o
−
58
o
=
302
o
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2
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It is given that
∠
X
Y
Z
=
64
o
and
X
Y
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Y
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, find
∠
X
Y
Q
and reflex
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Y
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P
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Question 6
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Z
=
64
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∠
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