C-O-C bond angle in ethers is higher than H-O-H bond angle in water through O is `sp^3` -hybridisedin both the cases.

Explanation

The bond angle l-O-H in water is less than the tetrahedral angle (109.50 ) . It is due to repulsion between the bond pairs of electrons on oxygen the bond angle C-O-H in alcohols is slightly less than the tetraheoral angle 109. 50 . It is due to the repulsion between the lone pairs of electrons on oxygen .
However in this case the C-O-H bond angle is more than H-O-H blood angle in water .It is due to bulkier R-Group .

In ehters the bond C-O-H angle is slightly greater than the tetrahedral angle . It due to the repulsive interaction between two bulky (-R) groups .