Question

If tan A,tan B are the roots of the equation x^2+px+q=0(p not equal to 0 ),then prove that tan(A+B)=p/q-1

Answer 1

since tanA , tan B are the roots, so tanA + tan B = -p
and tan A tanB = q

Answer 2

1 - tanA tanB = 1-q
take ratio to get the answer

Answer 3

ya..I got it,thnx it helped me a lot...

Answer 4

np