Question

if x=30 degree verify sin x = underoot 1-(cos2x/2)

Answer 1

Explanation:

see LHS

sin x =sin 30=1/2

now RHS

according to formula (1-cos2x)/2=sin^2 x

so √sin^2 x = sin x =sin 30=1/2

so LHS = RHS

Answer 2

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