If \[x\text{ }cos\theta +y\text{ }sin\text{ }\theta =2\] is perpendicular to the line\[x-y=3\], then what is one of the value of\[\theta \]?

If \[x\text{ }cos\theta +y\text{ }sin\text{ }\theta =2\] is perpendicu

1.	If \[x\text{ }cos\theta +y\text{ }sin\text{ }\theta =2\] is perpendicular to the line\[x-y=3\], then what is one of the value of\[\theta \]?
A.	\[\pi /6\]
B.	\[\pi /4\]
C.	\[\pi /2\]
D.	\[\pi /3\]
Answer» C. \[\pi /2\]

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If \[x\text{ }cos\theta +y\text{ }sin\text{ }\theta =2\] is perpendicular to the line\[x-y=3\], then what is one of the value of\[\theta \]?

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