Exams

What is the value of  4cos90-A sin390+A - 4sin90+A cos390-Acos180+8A2 ?

The average of three consecutive odd numbers is 52 more than 1/3rd of the largest of these numbers. What is the smallest of these numbers?

If A = (-14 + 4) and B = 4 - 14, then AB = 

If the edge of a cube is increased by 3 cm, the volume will increase by 657 cub.cm. What then is the original length of each edge of the cube?

If the average age of 20 students in Class-I is 10 years and average age of 25 students in Class II is 12 years, find the average age (in years) of all students.

In a certain code language, "OCEAN" is written as "PEHES". How is "RIVER" written in that code language?

∆PQR is right angled at Q. If sinP = 12/13, then what is the value of tanR?

What is the value of sin225°+ sin265°?