Question

If ø = 30 verify that sin2ø= 2 sin40. cos30

Answer 1

Hi mate,

hope this helps you

Answer 2

Answer:

$sin0 = \sqrt{ \frac{0}{4} } = 0$

$sin30 = \sqrt{ \frac{1}{4} } = \frac{1}{2}$

$sin45 = \sqrt{ \frac{2}{4} } = \frac{1}{ \sqrt{2} }$

$sin60 = \sqrt{ \frac{3}{4} } = \frac{ \sqrt{3} }{2}$

Hope it will be helpful ✌️