Question

if tan x ½, then sin 2x is​

Answer 1

Answer:

2/√5

Step-by-step explanation:

tan x = 1/2 = p/b

where p= 1 and b= 2

So, h²=p²+b²

h²=1²+2²

= 1+4

= 5

h²= 5

h= √5

sinx= p/h

= 1/√5

sin2x = 1/√5× 2

= 2/√5