Question

Which of the following is true ?

• A. sin x = 1.2
• B. cos x = -∏
• C. sec x = -1.23
• D. cosec x = ∏/4

Answer 1

Answer:

C. sec x = -1.23

y = cosec x ; x ≤ -1 or x ≥ 1 ; -∏/2 ≤ y ≤ ∏/2 , y ≠ 0