Question

1/1.3+1/3.5+1/5.7+.......n terms =n/2n+1​

Answer 1

Answer:

Hence it is proved by PMI that both sides are equal.

Step-by-step explanation:

Step 1: Given data. P(n) : 1/1.3+1/3.5+−−−−−+1/(2n−1)(2n+1)

=n/(2n+1)

Step 2: To prove, P(1) is true.

LHS=1/1.3=1/3.

RHS=1/2×1+1=1/3.

Thus, P(1) is true.

⇒LHS=RHS

please Mark me as brainlist

Answer 2

Answer:

Answer:

sin x = 5/13

Step-by-step explanation:

cos x= base / hypotenuse = - 12/13

using Pythagoras

adjacent = 5

sin = adjacent / hypotenuse= -5/ 13