Question

If cos inverse x + cos inverse y = pi/4 find sin inverse x + sin inverse y

Answer 1

I’m writing sin inverse as arcsinx
Identity used
arcsinx= pi/2-arccosx
arccosx+arccosy=pi/4
Pi - arcsinx-arcsiny = pi/4
Thus arcsinx+arcsiny= 3pi/4

Mark brainliest if understood