If sinθ+cosecθ=2, the value of sinnθ+cosecnθ is

If  x = a + 1/a, y = a - 1/a, then the value of x4+y4-2x2y2

The average age of a class of 39 students is 15 years. If the age of the teacher is included, then the average increases by 3 months. Find the age of the teacher.

The average age of a class of 39 students is 15 years. If the age of the teacher is included, then the average increases by 3 months. Find the age of the teacher.

The least number that must be added to 8961 to make it exactly divisible by 84 is

A man buys a table and a chair for Rs. 500. He sells the table at a loss of 10% and the chair at a gain of 10%. He still gains Rs.10 on the whole. The cost price of chair in rupees is

The value of cosec260 + sec260 cot260 + tan230 will be

The point equidistant from the sides of a triangle is called