Question

please explain how this came!!
please!!!!​

Answer 1

Step-by-step explanation:

We know that Sin (2θ) = 2 sinθ cosθ

Then, sin(θ) = 2 sin(θ/2) cos(θ/2).

Now,

Given Equation is:

⇒ π + 4sinθ

⇒ π + 4(2 sin θ/2 cosθ/2)

Hope it helps!