giannieta
giannieta giannieta
  • 17-04-2017
  • Mathematics
contestada

prove the identity (sina-cosatanb)/(cosa+sinatanb) = tan (a+b)

Respuesta :

Abu99
Abu99 Abu99
  • 17-04-2017
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)
Answer Link

Otras preguntas

Emily wants to plant flowers in an area with angular but that is 1 foot by 4.5 ft. the flowers she wants to plant need to be spaced at least 8 inches apart. how
I need help ASAP Choose the correct answer. To communicate effectively, people must share a common __ currency history language .
A. -3 B. -1/3 C. 1/3 D. 3
Please help this is so confusing!!!
Businesses only aim at maximising profit. Discuss this assertion. [12]​
5. Find the net force acting on the books below
use the number line to find the sum of 1.5+(-5). A. -3.5 B.6.5 C.-6.5 D.3.5
Estimate and then find the quotient. Use your estimate to check for reasonableness. 8,040 ÷ 25
According to the Charter of 1732, what was the MOST important product for the Georgia Colony to produce? indigo rice silk cotton
Solve the equation for x -x+ 5 + 6x = 1 + 5x + 3​