Question

if thata is an acute angle such that sin thata is 5/13 what is the value of sin 2 thata

Answer 1

1) 12/13
2) 10/26
3) 60/169
4) 120/169

Answer 2

you know that sin 2 theta = 2sinthetacostheta by the double-angle formula
so you do
2(4/13)(4/13)
and that's the answer