The class mark of class 90-120 is ?

If sinx + siny + sinz = 3. Find the value of cosx + cosy+ cosz.

The manufacturer of a certain item can sell all he can produce at the selling price of Rs 60 each. It costs him Rs 40 in materials and labour to produce each item and he has overhead expenses of Rs 3000 per week in order to operate the plant. The number of units he should produce and sell in order to make a profit of at least Rs 1000 per week, is ?

\(N= 9^9 \) the N is devisible by how many positive perfect cube.

Find the principal value 

\(Cos^{-1} [\frac {-√3}{2}]\)

Find the principal value :

\(Tan^{-1}[\frac {-1}{√3}]\)

Find the principal value :

\(Cot^{-1}(\frac{-1}{√3})\)

Find the principal value:

\(Cosec^{-1} (-1)\)

\(N=2^9* 3^7*5^4*7^3\) then N is divisible by how many positive perfect square.

If \(N= 4^{11}+4^{12}++4^{13}+4^{14}\)then how many positive factor of N .

Find the sum of all even factor 64800.

Find the average of factor

3003.

What is the sum of reciprocal of all factor of number 360.

Find the sum of factor 19600

Find the even factor of 4200.

Find the even factor of 3600.

Find the total factor of 10500.