If A = pi/2 , cos A + sin (270^(@) -A)...

If A = `pi/2` , `cos A + sin (270^(@) -A)+ cos (180^(@) +A)=` .................. A) `-1` B) `0` C) `1` D) `1/2`

A

`-1`

B

0

C

1

D

`1/2`

Verified by Experts

The correct Answer is:

B

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