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If A(sinalpha,(1)/(sqrt(2)))" and "B((1)...

If `A(sinalpha,(1)/(sqrt(2)))" and "B((1)/(sqrt(2)),cosalpha)-pilealphalepi` are two points on the same side of the line `x-y=0`. Then `alpha` belongs to the interval

A

`(-(pi)/(4),(pi)/(4)) uu ((pi)/(4),(3pi)/(4))`

B

`(-pi,-(pi)/(4))`

C

`((3pi)/(4),pi)`

D

`(-pi,pi)`

Text Solution

Verified by Experts

The correct Answer is:
B
`g'(x)=0implies"Tangent is " y=1`
`"Area "=(1)/(2)(2pi-2)(pi-1)`
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