Find the no. Of ways of choosing 4 cards from a pack of 52 cards . In how many of these

1. 4 cards are of same suit
2. 4 cards belong to 4 different suits
3. Are face cards
4. 2 are red cards and 2 are black cards

2 cot theta cos theta = 1 illustrate  answer in graphically 

class 12 english syllabus

Find the equation of the line on which the perpendicular from the origin makes an angele of 30⁰ with the x axis and which forms a triangle of area 50/3 with the coordinate axes. 

Inverse of matrices may be different when we find inverse of matrices

show the explanation of drawing root 5 on number line

In figure, pq and RS are 2 mirrors placed parallel  to each other.  An incident ray AB strikes the mirror PQ at B, ,the reflected ray moves along the path bc and strikes the mirror rs at c and again reflects back along CD.  Prove that about parallel to CD 

1. If each diagonal of quadilateral divides it into twi triangles of equal areas then show that quadilateral ia equal to parallelogram

What is the integral of e^2x

Find the equation of the line on which the perpendicular from the origin makes an angele of 30⁰ with the x axis and which forms a triangle of area 50/3 with the coordinate axes. 

In the representation of  on number line we follow following steps of construction.

• Draw AB = x units.
• Extend AB upto C such that AC = x + 1.
• Draw perpendicular bisector of AC let O is the mid-point of AC.
• Draw semicircle of radius = OA and centre O.
• Draw perpendicular from B which intersect semicircle at D.

Let M is the mid-point of OD. If BM =9.5 then find the number which is being represented.

Integrate x² sin x dx

Example of binomial of degree 28