What is the value of sec -2π/3 ?

If 12x = 192- 112, what is the value of x?

tan(A/2) is equal to

1/(secA + tanA) is equal to

Which of the following equations has the sum of its roots as 11?

A bag has Rs12.9 in the form of 1 rupee, 50 paise and 10 paise coins in the ratio of 3:2:3. How many 50 paise coins are there in the bag?

The price of an article is cut by 7%, to restore it to its original value, the new price must be increased by

When a discount of 20% is given on a movie ticket, the profit is 34%. If the discount is 15%, then the profit is