The value of \[\cos (270{}^\circ +\theta )\,\cos (90{}^\circ -\theta )-\sin (270{}^\circ -\theta )\,\cos \theta \] is [Karnataka CET 2005]

The value of \[\cos (270{}^\circ +\theta )\,\cos (90{}^\circ -\theta )

1.	The value of \[\cos (270{}^\circ +\theta )\,\cos (90{}^\circ -\theta )-\sin (270{}^\circ -\theta )\,\cos \theta \] is [Karnataka CET 2005]
A.	0
B.	-1
C.	44228
D.	1
Answer» E.

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The value of \[\cos (270{}^\circ +\theta )\,\cos (90{}^\circ -\theta )-\sin (270{}^\circ -\theta )\,\cos \theta \] is [Karnataka CET 2005]

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