Question

if a=340 then 2sina/2 is identical to? ​

Answer 1

Answer:

Step-by-step explanation:

Given A = 340 degree

Now 2 sin A/2 will be 2 sin 340/2

It will be 2 sin 170

We know that sin (180 – θ) = sin θ

Now we can write as

2 sin 170 = 2 sin (180 – 10)

                = 2 sin 10

So, the expression 2 sin A/2 is identical to 2 sin 10 when A = 340