$\"\"$ \ \

a). \ \ The angle $\"\"$ . \ \

Converting the angle into decimal degree form: \ \

$\"\"$ $\"\"$

b). \ \ The angle $\"\"$ . \

Converting the angle into decimal degree form: \ \

$\"\"$ $\"\"$ \ \

Therefore,(a).The decimal degree form of $\"\"$ is $\"\"$ .

(b).The decimal degree form of $\"\"$ is $\"\"$ . \ \