Question

Cos (x-
`(5)/(6)`)=
`(√(2) )/(2)`

Answer 1

Solution given;

Cos (x-
`(5)/(6)`)=
`(√(2) )/(2)`

Cos (x-
`(5)/(6)`)=Cos45°

equating corresponding value

(x-
`(5)/(6)`)=45°

x=45°+5/6

x=45.83°