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NDA Math Definite Integrals
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© examsnet.com
Question : 29
Total: 62
What is
π
2
∫
0
d
θ
1
+
cos
θ
equal to ?
[NDA I 2017]
1
2
1
√
3
None of the above
Validate
Solution:
π
2
∫
0
1
1
+
cos
θ
d
θ
=
π
2
∫
0
1
2
cos
2
θ
2
d
θ
=
1
2
π
2
∫
0
sec
2
θ
2
d
θ
=
1
2
×
2
[
tan
θ
2
]
0
π
2
=
1
© examsnet.com
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