Question

If 0=30° then verify that sin20=2sin0.cos0
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Answer 1

It is proved that sin20=2sin0.cos0

Step-by-step explanation:

Given

`0=30` °

`sin20=2sin0.cos0`

Substituting the value of "0" on both the sides, we get -

`sin2 (30) =2sin 30 * cos 30\\sin 60 = 2 * sin 30 * cos 30 \\0.866 = 2 * 0.5 * 0.866\\0.866 = 0.866`

Since LHS = RHS

we can say that
`sin20=2sin0.cos0`