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Observe the following: (I) sin^2 20^@+si...

Observe the following: (I) `sin^2 20^@+sin^2 70^@=1` (II) `log_2(sin90^@)=1`Which one is CORRECT?

A

(I) only

B

(II) only

C

Both (I) and (II)

D

Neither (I) nor (II)

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