Question

Cos inverse X + Sin inverse X by 2 equals to 5 by 6

Answer 1

cos inverse x=sec x
sin inverse x=cosec
cos inverse x +sin inverse x/2=5/6
sec x+cosec x /2=5/6
sec x+cosec x*6=5*2
sec x +cosec x*6=10
3*sec x +cosec x=5