Introduction To Trigonometry
> Question
VSA
2 marks
Year: 2023
Medium
CBSE Class 10
trigonometry
cosecant
standard-values
Question
If
sin
α
=
2
1
and
cot
β
=
3
, then find the value of
cosec
α
+
cosec
β
.
Solution
1
cosec
α
=
s
i
n
α
1
=
2
+0.5 marks
2
cosec
β
=
1
+
cot
2
β
=
1
+
3
=
2
+1 mark
3
∴
cosec
α
+
cosec
β
=
2
+
2
or
2
(
2
+
1
)
+0.5 marks
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