Math, asked by savita8853, 10 months ago

if a=d then find Sn:tn

Answers

Answered by Anonymous

2

Step-by-step explanation:

Tn = a + (n-1)d

= a + an -a......... (a = d)

= an

Sn = n/2 [2a +(n-1)d]

= n/2 [2a + an -a].......... (a = d)

= n/2 [ a +an]

Sn : Tn

n/2 [ a + an]: an

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