Question

vii) sec 240
$sec 240$
​

Answer 1

Step-by-step explanation:

sec 240

sec (180 + 60)

- sec 60

-ve sign indicates it lies on 3 rd quadrant

and we know

sec is negative in 3rd Quadrant.

Answer 2

Answer:

-2

Step-by-step explanation:

sec (270-30)°

sec (3.90-30)°

-cosec(30)°

-2