1.

Ifcos (A-B)=3//5 and tan A tan B=2 , then which one of the followingis true ?

Answer»

SIN (A + B) = `(1)/(5)`
sin (A + B) `(-1)/(5)`
COS (A- B) = `(1)/(5)`
cos (A+B) = `(-1)/(5)`

Answer :D


Discussion

No Comment Found