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If alpha(1), alpha(2), alpha(3), beta(1)...

If `alpha_(1), alpha_(2), alpha_(3), beta_(1), beta_(2), beta_(3)` are the values of n for which `sum_(r=0)^(n-1)x^(2r)` is divisible by `sum_(r=0)^(n-1)x^(r )`, then the triangle having vertices `(alpha_(1), beta_(1)),(alpha_(2),beta_(2))` and `(alpha_(3), beta_(3))` cannot be

A

an isosceles triangle

B

a right angled isosceles triangle

C

a right angled triangle

D

an equilateral triangle

Text Solution

Verified by Experts

The correct Answer is:
D
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