Can someone help me with this prolem please?

Use the information given about the angle Ɵ to find the exact value of:
sin 2Ɵ.

1) cosƟ= 3/5, 0 < Ɵ < (π/2)

theta is 52.13 degrees. 2theta is 104.26 degrees, and sin 2theta is 0.9600

One way to prove that without a calculator is to use
sin(2theta) = 2 sin theta* cos theta
= 2*(3/5)*(4/5) = 24/25 = 0.96 exactly