If tanα and tan β are the roots of x2 + ax + b = 0 then \(\frac{\sin (\alpha+\beta)}{\sin \alpha \sin \beta}\) is equal to ……………………..
A. \(\frac{b}{a}\)
B. \(\frac{a}{b}\)
C. –\(\frac{a}{b}\)
D. –\(\frac{b}{a}\)
Answer:C
If tanα and tan β are the roots of x2 + ax + b = 0 then \(\frac{\sin (\alpha+\beta)}{\sin \alpha \sin \beta}\) is equal to ……………………..
A. \(\frac{b}{a}\) B. \(\frac{a}{b}\) C. –\(\frac{a}{b}\) D. –\(\frac{b}{a}\)