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I : cos^2 theta + cos^(2) (60^@ + theta ...

I : `cos^2 theta + cos^(2) (60^@ + theta ) + cos^(2) (60^@ - theta ) = 3//2`
II : ` sin^(2) theta + sin^(2)(60^(@) + theta ) + sin^(2)(60^(@) - theta ) =3//2`

A

only I is true

B

only II is true

C

both I & II are true

D

neither I nor II are true

Text Solution

Verified by Experts

The correct Answer is:
C
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