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I : If cos alpha + cos beta + cos gamma...

I : If ` cos alpha + cos beta + cos gamma =3 " then " sin alpha + sin beta + sin gamma =0`
II : If ` sin alpha + sin beta + sin gamma =3 " then " cos alpha + cos beta + cos gamma =0`

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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