adtranzoo
adtranzoo adtranzoo
  • 27-02-2021
  • Mathematics
contestada

Prove that
cos 9°+sin 9°/cos9°-sin9° =cot 36°
plzz fasstttt i need to writw this!!!!!!!!!​

Respuesta :

kritika3375
kritika3375 kritika3375
  • 27-02-2021

Answer:

Step-by-step explanation:

LHS = (Cos9° + Sin9°) / (Cos9° - Sin9°)  

Divide by Numerator  and Denominator   by  Cos9°  

LHS = (1 + Tan9°) / (1 - Tan9°)

       = (Tan 45° + Tan 9°) / (1 - Tan 45° * Tan 9°)  

       = Tan (45°+9°)  

       = Tan 54°

       = Cot 36°

hope it helps :)

Answer Link

Otras preguntas

I need the question 5 please
10. What expression is equivalent to: -4(2x-3) 8x -12 8x + 1* -8x -12 -8x + 12
Need help no links please
Does anybody know the answer
BRAINLIEST TO CORRECT explain every specific step and rule to the answer of this problem
18. Determine the current and its direction for each network in Fig. 5.102. Before solving for I, redraw each network with a single voltage source
write an equation of the line passing through the points (3,7) and (-2,-18)
!PLEASE HELP!at the farmers marker, leo bought 3.5 lb of fresh strawberries that cost $4.20 per pound. how many pounds could leo buy with the same amount of mon
In the country Gamma it takes 6 hours to produce one automobile and 1 hour to produce a bale of cotton. In the country Delta it takes 10 hours to produce one au
3x = 0.5.2 x = -6 or x = 0 x = -4 or x = 3 x = -2 or x = 1.5 x = 0 or x = 6