# Rabinprakash Dahal

Most popular questions and responses by Rabinprakash Dahal
1. ## Maths

If Tan (A+B)=1/3 and Tan(A-B)=2/5,then prove that A.Tan2A=11/13 B.Tan2B=-1/17

asked on September 1, 2015
2. ## Math

prove: tan10+tan70+tan100=tan10.tan70.tan100

asked on September 5, 2015
3. ## Maths

if m1 and m2 be the numberof sexagesimal and centasimal minute of any angle, prove that m1/27=m2/50.

asked on September 8, 2015
4. ## Maths urgent

One regular polygon has twice as many sides as another. If the ratio of the interior angles of the first to that of second is 5:4, find the number of sides in each polygon?

asked on September 13, 2015
5. ## TC Maths

Prove sin^2(x)-cos^2(y)/Sinx cosx-Sinycosy=TAN(x+y)

asked on September 30, 2015
6. ## TC

There are n arithmetic means between 1 and 31 such that seventh mean:(n-1)th mean =5:9. Find n.

asked on August 25, 2015
7. ## Maths urgent

a sum of money is invested for 3 years at a certain rate of interest. had the rate of interest been 1% more, it would have fetched rs 18 more than before. find the sum invested?

asked on November 3, 2015
8. ## TC

If Tan (A+B)=1/3 and Tan(A-B)=2/5,then prove that A.Tan2A=11/13 B.Tan2B=-1/17

asked on September 1, 2015
9. ## Maths urgent

Solve.√(2)sec(x)+tan(x)=1 0≤x≤360

asked on December 3, 2015
10. ## English

is it possible to use was after did?

asked on October 12, 2015
11. ## TC

Prove:sin ^2(7π/8)+sin^2(5π/8)+sin^2(3π/8)+sin^2(π/8)=0

asked on September 1, 2015
12. ## TC

If the height of hemisphere and cone is 49cm and height of cone is 35cm find the volume of solid.

asked on August 25, 2015
1. ## Maths

if m1 and m2 be the numberof sexagesimal and centasimal minute of any angle, prove that m1/27=m2/50.

posted on September 8, 2015
2. ## TC

If Tan (A+B)=1/3 and Tan(A-B)=2/5,then prove that A.Tan2A=11/13 B.Tan2B=-1/17

posted on September 1, 2015
3. ## math

There are n arithmetic means between 1 and 31 such that seventh mean :( n -1)th mean = 5 : 9. Find n.

posted on August 25, 2015