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Byju's Answer
Standard IX
Mathematics
Expansion of (a ± b ± c)²
If cosec A ...
Question
If
cosec
A
=
2
, find the value of
1
tan
A
+
sin
A
1
+
cos
A
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Solution
Given,
csc
A
=
2
We know,
sin
A
=
1
csc
A
=
1
2
And,
sin
30
=
1
2
A
=
30
tan
30
=
1
√
3
and
cos
30
=
√
3
2
To find the value of
1
tan
A
+
sin
A
1
+
cos
A
=
1
tan
30
+
sin
30
1
+
cos
30
=
1
1
√
3
+
1
2
1
+
√
3
2
=
√
3
+
1
2
2
+
√
3
2
=
√
3
+
1
2
+
√
3
=
2
√
3
+
3
+
1
2
+
√
3
=
2
√
3
+
4
2
+
√
3
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Q.
If
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Solve
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MATHEMATICS
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Expansion of (a ± b ± c)²
Standard IX Mathematics
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