Rabin

This page lists questions and answers that were posted by visitors named Rabin.

Questions

The following questions were asked by visitors named Rabin.

P and Q are two points on the line x-y+1=0 and are at a distant of 5 units from the origin. Find the area of triangle POQ.

Solve:(a+x)^2/3+(a-x)^2/3=3(a^2-x^2)^1/3

which part of the tongue is stimulated by more temperature? Explain.

if a strong odour is smelt continuously for some time the sensation of smell of that substance weakness why?

Solve: (1-√3tanθ)+1+√3 = √3sec^2θ Where (0≤θ≤360)

if vectors a+2b and 5a-4b are perpendicular to each other and a and b are unit vectors. Find the angle between a and b.

In ∆ABC, AD median of BC where position vectors of A and D are 3i-2j and -3i-4j respectively. Find the position vector of centroid G of the ∆ABC.

In what ratio the line segment AB divided by P where, OA= 4i+2j, OB=18i+4j and OP=8i+4j.

If vector OA=4i+2j ,OB=6i-8j and OC=-2i+5j then find the value of <ACB.

In ∆ABC,D and E divides AB and AC in the ratio of 1:2 respectively. Prove that Vector DE=1/3BC.

In ∆ABC, OA=3i-5j, OB=-7i+4j and the position vector of centroid G is 2i+j. Find OC.

If m th term of the geometric series is 1/n and n th term is 1/m then show that sum of first (mn) th term of this series is 1/2 (mn+1).

ABCDEF is a regular hexagon. Show that vecotr AB+AD+FA+EA=3AB

ABCDEF is a regular hexagon. If AB=a,BC=b,express vector,AD AND AE in terms of a and b.

Prove: 1+(TanA/SinB)^2/1+(TanA/SinC)^2 = 1+(SinA/TanB)^2/1+(SinA/TanC)^2

If 1/sinA+1/cosA =1/sinB+1/cosB, prove that: cot(A/2+B/2) = TanA. TanB

Some amount of money is distributed to a some students equally. If the number of student is decreased by 10 then they will get 20 rupees more. If student is increased by 10 then they will get 4 rupees less. Find the amount and number of student?

Prove :Tan20+4sin20=square root 3

prove that : cos^3(θ)sin^2(θ)=1/16[2cos(θ)-3cos(θ)-5cos(θ)]

Prove that:sin(x+2y)+sin(y+2z)+sin(z+2x)=4sin(x-y)/2sin(y-z)/2sin(z-x)2

What do you mean by resultant vector?

X,Y and Z can do a piece of work in 15 days. If X takes twice as much as Y and Z together and Y takes thrice as much as X and Z together, how long days will each take to finish a work.

Solve: 66x^3+5280x^2-56847=0

Solve for: 4^x+4^(1/x)=18

Answers

The following answers were posted by visitors named Rabin.

If m th term of the geometric series is 1/n and n th term is 1/m then show that sum of first (mn) th term of this series is 1/2 (mn+1).

ABCDEF is a regular hexagon. Show that vecotr AB+AD+FA+EA=3AB

How to solve two variable in one time please.. Help me

Find two separate equation of x^2+2xy+y^2-2x-2y-15=0