Question

Find sinx/2 , cosx/2 , tan x/2 in the Question where

1) tanx = 3/4 x lies in 3rd Quadrant.​

Answer 1

Answer:

-3/5,

Tanx=p/b& p=3, b=4 using pythagoras h=5 & sinx =p/h it is - tive in 3rd quadrant - 3/5