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costheta[{:(costheta,-sin theta),(sinthe...

`costheta[{:(costheta,-sin theta),(sintheta,costheta):}]+sintheta[{:(sintheta,costheta),(-costheta,sintheta):}]=?`

A

`[{:(0,0),(0,0):}]`

B

`[{:(1,0),(0,1):}]`

C

`[{:(0,1),(1,0):}]`

D

None of these

Text Solution

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The correct Answer is:
B
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