Which of the following is true for 0° < θ < 90° ?

The difference between Simple Interest & Compound Interest for the fourth year is Rs 7280 at 20% per annum. What is the principal amount.

Three successive discounts of 40%, 25% and 20%, respectively, on the marked price of a chair, are equal to a single discount of Rs.960. The marked price (in Rs) of the chair is:

If θ be positive acute angle and \(5cosθ + 12sinθ = 13\), then the value of cosθ is

If \(sin α + csc α = tan{\pi\over 3}\), then the value of (sin^{3}α + csc^{3}α) is equal to: