Question

In a triangle ABC, C = 90', then the equation
whose roots are tanA, tanB is
1) ab x² + cx + ab = 0 2) ab x² + c x - ab=0
3) ab x? -c'x - ab = 0 4) ab x? -c-x + ab = 0​

Answer 1

Answer:

Y = A’BC + AB’C + A’B’C + ABC +AB’C’