\[\int_{\pi /4}^{\pi /2}{\cos \theta \,\text{cose}{{\text{c}}^{\text{2}}}\theta \,d\theta =}\] [Roorkee 1978]

\[\int_{\pi /4}^{\pi /2}{\cos \theta \,\text{cose}{{\text{c}}^{\text{2

1.	\[\int_{\pi /4}^{\pi /2}{\cos \theta \,\text{cose}{{\text{c}}^{\text{2}}}\theta \,d\theta =}\] [Roorkee 1978]
A.	\[\sqrt{2}-1\]
B.	\[1-\sqrt{2}\]
C.	\[\sqrt{2}+1\]
D.	None of these
Answer» B. \[1-\sqrt{2}\]

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\[\int_{\pi /4}^{\pi /2}{\cos \theta \,\text{cose}{{\text{c}}^{\text{2}}}\theta \,d\theta =}\] [Roorkee 1978]

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