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DeltaDEF is right angled at E . If ma...

`DeltaDEF` is right angled at E . If `mangleD=45^(@)` , then what is the value of `cosecFxxcotD` ?

A

`(1)/(sqrt2)`

B

2

C

`(1)/(2)`

D

`sqrt2`

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The correct Answer is:
D
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