Quantitative Aptitude - Arithmetic Ability Questions

If Cot θ = 21/20, then what is the value of Cosec θ?

If tanθ + cotθ = 5, then the value of tan2θ + cot2θ is

A student, by mistake, wrote 64 in place of 46 as a number at the time of finding the average of 10 given numbers & got the average as 50. The correct average of the numbers is

Which of the following equations has 3 as a root?

ABCD is a quadrilateral with AB = 9 cm, BC = 40 cm, CD = 28 cm, DA = 15 cm and angle ABC is a right –angel
What is the difference between perimeter of triangle ABC and perimeter of triangle ADC?

BD and CE are two medians of the triangle ABC. If EO = 7 cm, then the length of CE is

Calculate the principal if an amount of Rs. 441 is received on compound interest at the rate of 5% per annum after 2 years.

If (tanA + tanB)/(1 ­ tanAtanB) = x, then the value of x is