Question

if tan x is equals to 40 by 9 then find the value of sec X and cos x​

Answer 1

Answer:

Step-by-step explanation:

let,tanx=40/9 then

sec^2x=1+tan^2x

1+1600/81

1681/81

taking sqrt

secx=41/9

1/cosx=secx=41/9 then cosx=9/41