Question

if A =30 then sin2A and the cos 2A​

Answer 1

Answer:

Given A = 30

2A = 2×30 = 60

sin60 = r00t 3 /2

cos 60 = 1/2

Answer 2

Answer:

sin 2A = sin 60 =

$\sqrt{3} divide \: by \: 2$

cos 2A=cos 60 = 1/2