The value of \(cot{π\over 20}.cot{3π\over 20}.cot{5π\over 20}.cot{7π\over 20}.cot{9π\over 20}\) is
The value of 80° in radian is
The difference between Simple Interest & Compound Interest for the fourth year is Rs 7280 at 20% per annum. What is the principal amount.
Sudha bought 80 articles at the same price. She sold some of them at 8% profit and the remaining at 12% loss resulting in an overall profit of 6%. The number of items sold at 8% profit is:
sin 3 θ+cos3θ = 0, then the value of θ is