Question

I will mark u as brainlist​

Answer 1

Answer:

Step-by-step explanation:

Sin-1x+sin-1y=2π/3

we know that, sin-1x+cos-1x=π/2; or cos-1x=π/2-sin-1x

∴, cos-1x+cos-1y=π/2-sin-1x+π/2-sin-1y=(π/2+π/2)-(sin-1x+sin-1y)=π-2π/3

=(3π-2π)/3=π/3

brainliest pls