A) \[\frac{\pi }{6}\]
B) \[\frac{\pi }{4}\]
C) \[\frac{\pi }{3}\]
D) \[\frac{\pi }{2}\]
Correct Answer: D
Solution :
[d] Slope of \[x+y=1\] is -1 Slope of \[x-y=1\] is 1 Let \[\tan A=-1,\,\,\tan \,B=1\] \[A=\frac{3\pi }{4},B=\frac{\pi }{4}\] \[A-B=\frac{\pi }{2}\]
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