Homework Statement
101. If A, B and C are the angles of a triangle and e1A, e1B and e1C are in Arithmetic Progression, then the
triangle is:
(A) Right angled but not isosceles (B) Isosceles but not right angled
(C) Equilateral (D) Right angled isosceles
Homework Equations
The...
Homework Statement
The determinant
a+1 a a a
b b+1 b b
c c c+1 c
d d d d+1
equals =?
option : a) 1+ a + b+ c+ d
b)a + b+ c+ d
c)a.b.c.d
d)1 + a.b.c.d
Homework Equations
The Attempt at a Solution
[1] tried using finding...