Sina - (cosa)(tanb)/cosa + (sina)(tanb)
sina ≡ (tana)(cosa)
(tana)(cosa) - (cosa)(tanb)/cosa + (tana)(cosa)(tanb)
= cosa(tana - tanb)/cosa(1 + tanatanb)
(cosas cancel out)
= (tana - tanb)/(1 + tanatanb) ≡ tan(a-b)
4/5 x 3/4 is just 12/20, and then when you simplify that you get 3/4.
Answer:
54
Step-by-step explanation:
Number of students travelled by bus = 331 - 7 = 324
Number of students in each bus = 324/6 = 54
Answer:
54 in
Step-by-step explanation:
9 inches x 6 inches