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Standard XII
Mathematics
Question
Two complementary angles measures
(
2
x
+
10
)
0
and
(
x
+
20
)
0
. What is the value of
x
.
20
o
25
o
30
o
35
o
A
30
o
B
25
o
C
35
o
D
20
o
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Solution
Verified by Toppr
For complementary angles
(
2
x
+
10
)
o
+
(
x
+
20
)
o
=
90
o
3
x
+
30
o
=
90
o
3
x
=
60
o
x
=
20
o
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4
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