If cos 2α = 1⁄2 ,then α is a 15 0 b 30 0 c 60 0 d 0 0

If cos 2α = 1⁄2 ,then α is
a 15 0
b 30 0
c 60 0
d 0 0
by

1 Answer

Answer :

b 30 0
by

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