The value of \[\cos A-\sin A\]when \[A=\frac{5\pi }{4},\]is [MP PET 1990]

The value of \[\cos A-\sin A\]when \[A=\frac{5\pi }{4},\]is [MP PET 19

1.	The value of \[\cos A-\sin A\]when \[A=\frac{5\pi }{4},\]is [MP PET 1990]
A.	\[\sqrt{2}\]
B.	\[\frac{1}{\sqrt{2}}\]
C.	0
D.	1
Answer» D. 1

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The value of \[\cos A-\sin A\]when \[A=\frac{5\pi }{4},\]is [MP PET 1990]

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