Mathematiques
28 QUESTIONS
Q1. Sin(a-b) = ?
A) Sin(a)cos(b)-cos(a)sin(b)
B) Sin(a)cos(b)+cos(a)sin(b)
Q2. Sin(a+b) = ?
A) Sin(a)cos(b)+cos(a)sin(b)
B) Sin(a)cos(b)-cos(a)sin(b)
Q3. Tg(a-b) = ?
A) (tan(a)-tan(b))/(1+tan(a)tan(b))
B) (tan(a)+tan(b))/(1-tan(a)tan(b