Question

Which of the following are A.P.s ? If they form an A.P

find the common difference d and write 3 more term

2,5÷2,3,7÷2 

Like - 

     1st term :-  5÷2-2

                         5-2×2÷2  👈

                     =  5-4÷2

                   =  1÷2 

My questions is why multiplied 2 there ??????

in the given figure ABC is a right angle triangle and right angle at B SUCH that angle BCA =2angel BAC

SHOW THAT HYPOTENUS  AC =2 BC

• 0.6 0.7 0.43
  

Maths ncert solution of class9

• If a parallelogram is cyclic,then it is a rectangle. Justify
  

Example of binomial in two variables having degree 5

Prove that a triangle must have atleast two acute angles. 

If cos2A = 1-2sin^2A prove that sin15 = √2-√3/2?

If cos2A = 1-2sin^2A prove that sin15 = √2-√3/2?

• #1. Let f: N → Z be defined by the two-part rule f(n) = n/2, if n is even
  −(n + 1)/2, if n is odd.
  Determine whether f is one-to-one.

Np4=1680